Mourinho Eyes Free Transfer Move for Kostic as Benfica Reshapes Left Flank

Benfica, under José Mourinho's guidance, is positioning itself to make a strategic summer move for veteran winger Filip Kostic, whose contract with Juventus expires on June 30, 2026. The 33-year-old Serbian international, who already worked under Mourinho during a loan spell at Fenerbahçe last season, could arrive at Estádio da Luz on a free transfer — a zero-cost acquisition that fits the club's financial prudence while adding tactical versatility to the squad.

Why This Matters

• Free agent opportunity: Kostic becomes available without a transfer fee in under four months, allowing Benfica to invest budget elsewhere.

• Mourinho connection: The Portuguese manager already knows the player's capabilities from their successful collaboration in Turkey.

• Tactical flexibility: Kostic can operate as both a traditional left-back and an attacking left winger, addressing multiple positional needs.

• Competition from Turkey: Fenerbahçe is also pursuing the Serbian, potentially driving up wage demands.

Juventus Prioritizes Other Contracts

Turin-based Juventus has made its priorities clear, and Kostic sits far down the renewal list. According to Italian outlet TuttoMercatoWeb, the club hierarchy is focused on securing extensions for emerging talents Yildiz and McKennie before turning attention to striker Dusan Vlahovic's expiring contract. Only after resolving those three situations would the club consider addressing Kostic's future, and by then the June 30 deadline will have essentially arrived.

This organizational triage has left the Serbian international in limbo, technically still a Juventus player but functionally free to negotiate with any interested club. Kostic has not initiated renewal discussions with Juventus management, and the mutual disinterest suggests a parting is inevitable. For Benfica supporters, this bureaucratic delay in Turin creates a window of opportunity that Mourinho appears eager to exploit.

The winger originally joined Juventus from Eintracht Frankfurt in summer 2022 for approximately €14M, enjoying a productive first season in Italy with 3 goals and 12 assists across 54 appearances. However, his influence waned in subsequent campaigns, leading to the loan move to Fenerbahçe for the 2024/25 season.

The Fenerbahçe Chapter and Mourinho's Assessment

Kostic's spell in Istanbul provided the clearest evidence of his compatibility with Mourinho's tactical philosophy. Deployed in 34 matches under the Portuguese coach, the left-sided player contributed 2 goals and 7 assists while demonstrating the defensive discipline and transition speed that Mourinho values. Portuguese media reports confirm that Mourinho provided positive assessments of Kostic's work ethic and adaptability during their time together.

Fenerbahçe chose not to make the move permanent after the loan period, though the Turkish club is now reconsidering that decision, with reports suggesting they're interested in bringing him back permanently — this time negotiating directly with a free agent rather than paying a transfer fee.

After returning to Turin, Kostic has remained a peripheral figure, starting just 4 of 20 matches this season. At 33 years old, his reduced role suggests Juventus views him as a squad rotation option rather than a core building block, further supporting the likelihood of his summer departure.

What This Means for Benfica's Squad Planning

For residents following Benfica's title ambitions, Kostic represents a calculated risk: a veteran presence who could provide immediate quality without the financial commitment of a transfer fee. His ability to function both as a defensive fullback and an attacking winger on the left flank addresses two areas where Benfica has experienced flux.

The club recently sold David Jurásek to Slavia Praha for €3M in January 2026, while Rafael Obrador was loaned to Torino. Meanwhile, Álvaro Carreras — arguably the most promising left-back in the squad — continues to attract interest from Real Madrid and Atlético Madrid, with a reported €50M release clause that could be activated before the 2027 Club World Cup. If Carreras departs, Benfica would need experienced coverage.

Mourinho's interest in Kostic dates back to December 2025, when Italian media first reported that Benfica was monitoring the player on the manager's recommendation. The coach values Kostic's dual positional capability, which aligns with Mourinho's preference for tactically flexible players who can adjust roles mid-match depending on game state.

However, Kostic is not the only option under consideration. Benfica has also explored moves for Union Berlin's Robin Gosens (whose contract runs until 2028, making negotiations complex) and Lyon's Nicolás Tagliafico, another 32-year-old Argentine international. Additionally, the club is negotiating to make Samuel Dahl's loan permanent after his impressive performances. From the academy, youngsters Daniel Banjani and Janet are emerging as potential long-term solutions, though they lack the immediate experience required for European competition.

The Financial and Tactical Logic

Acquiring Kostic on a free transfer would represent classic Benfica strategy: minimizing upfront costs while securing experience. The club's model historically balances youth development with selective veteran additions, allowing resources to be concentrated on high-potential prospects who can later be sold for profit.

From a tactical standpoint, Mourinho's systems depend on disciplined wide players who can defend transitions and exploit counterattacking opportunities. During his Fenerbahçe loan, Kostic demonstrated exactly those qualities, fitting the defensive solidity and rapid transitions that define Mourinho's coaching philosophy. His 7 assists in Turkey suggest he retains the creative ability that made him a key figure at Frankfurt, where he won the Europa League title before moving to Italy.

The primary concern is age and decline. At 33, Kostic offers perhaps one or two competitive seasons at the highest level. His diminished role at Juventus this campaign raises questions about whether his physical capacity still matches elite demands, particularly in a league as intense as Liga Portugal. Benfica would essentially be betting on Mourinho's ability to extract specific performances from a player he knows well, rather than acquiring a long-term asset.

Competition from Turkey and Elsewhere

Fenerbahçe's renewed interest complicates matters. Having already spent a season in Istanbul, Kostic has established relationships and familiarity with the club environment. If Fenerbahçe makes a compelling financial offer — leveraging their stronger wage structure compared to Portuguese clubs — they could sway the player despite no longer having Mourinho on the touchline.

Italian reports also mention potential interest from Atalanta and AC Milan, though neither club has advanced concrete proposals. The reality is that Kostic's market value has declined, and most top-tier clubs view him as a squad depth option rather than a first-choice starter. For Benfica, this perception gap creates opportunity: the chance to secure a player who might accept a prominent role in Lisbon over limited minutes elsewhere.

Timeline and Next Steps

With June rapidly approaching, formal negotiations can accelerate. Free agents entering the final months of their contracts are legally permitted to discuss terms with other clubs, and Kostic's representatives are undoubtedly fielding inquiries. Benfica's challenge will be balancing wage demands against budget constraints, especially if multiple clubs compete for his signature.

Mourinho's personal relationship with the player could prove decisive. Coaches who successfully manage veteran players often secure loyalty that transcends purely financial considerations. If Mourinho can articulate a clear tactical role and emphasize Benfica's ambitions in domestic and European competition, that pitch might resonate more than a marginally higher salary elsewhere.

For supporters, Kostic would represent another thread in Mourinho's evolving Benfica project — a pragmatic addition designed to bridge short-term needs while younger prospects develop. Whether the club ultimately pursues the Serbian or pivots to alternative targets will become clear as the transfer window opens, but the groundwork has been laid for a reunion between coach and player at Estádio da Luz.