Controversial Referee Marco Guida Assigned to Porto's Europa League Clash: What Fans Should Know

The Italian referee assigned to oversee FC Porto's Europa League quarter-final clash with Nottingham Forest carries a track record that has left managers fuming across Europe—and the Portuguese side will hope history doesn't repeat itself at the Estádio do Dragão this Thursday.

Why This Matters

• Marco Guida has officiated one previous FC Porto match in European competition, a 3-2 home defeat to Krasnodar in 2019 Champions League qualifying.

• The 44-year-old has been at the center of multiple high-profile controversies since 2021, including clashes with José Mourinho and formal complaints from Atlético Madrid.

• Portugal's national team has faced Guida three times (two wins, one loss), while Benfica and Sporting have mixed records under his whistle.

A Referee Who Courts Controversy

Marco Guida, born June 7, 1981, has officiated in Italy's Serie A since 2010 and holds UEFA Elite Category status since joining the FIFA referees list in 2014. But his career trajectory has been punctuated by disputed calls that have drawn ire from some of European football's most prominent figures.

His most notorious run-in came in September 2021, when José Mourinho—now managing Benfica—unleashed a scathing post-match critique following Roma's 3-2 loss to Lazio. Mourinho, then at the helm of the Roman club, accused Guida and the VAR team of being "not at the right level" and claimed a missed penalty decision turned what should have been 1-1 into 2-0. The Portuguese coach also highlighted Guida's failure to issue a second yellow card to Lucas Leiva as a pivotal error that altered the match's dynamic.

"We dominated and caused Lazio big problems," Mourinho said at the time. "They controlled the last minutes the way they wanted, and also because the referee allowed them to."

Roma's sporting director, Tiago Pinto, reportedly confronted Guida and the VAR official directly after the match, signaling the club's institutional dissatisfaction with the officiating.

But Mourinho's complaints were far from isolated. In 2022, Guida awarded a penalty to Fiorentina against Roma that prompted Mourinho to demand explanations even after VAR review upheld the decision. The Portuguese manager's frustrations with the Italian official have become a recurring subplot in Serie A.

A Pattern of Disputed Calls

Guida's controversies extend well beyond Rome. In May 2024, he disallowed a goal for Aston Villa in a Europa Conference League semi-final against Olympiacos, a decision that left fans and pundits "in disbelief" despite VAR backing. Two months later, in August 2024, he issued two disputed yellow cards to Rangers defender Jefte in a Champions League qualifier, leading to a red card that infuriated the Scottish club's manager, supporters, and television analysts.

Perhaps most damaging to his reputation was an October 2024 Champions League fixture between Atlético Madrid and Lille, where Guida awarded a controversial penalty to the French side for an alleged handball by Atlético captain Koke. Replays suggested the ball had been handled by a Lille player instead. The Spanish club subsequently filed a formal complaint with UEFA over the decision.

In November 2024, Guida appeared to trip AC Milan's Alexis Saelemaekers during a match, though the Italian Referees Association (AIA) declined to take disciplinary action. A month later, he was involved in a "hugely controversial penalty decision" during a Serie A match between Pisa and Inter Milan, where he failed to award what appeared to be a clear-cut penalty to Inter.

The Porto Connection

For FC Porto, Guida represents an uncomfortable déjà vu. The only time he has officiated a match involving the Portuguese club came on August 13, 2019, when the Dragões lost 3-2 to Krasnodar at home in the second leg of a Champions League third qualifying round. That defeat remains the sole blemish on Guida's record with Porto, and the club's fans will be hoping the sample size grows more favorable Thursday night.

Guida has a broader history with Portuguese football. He has refereed three matches involving Portugal's national team (two victories, one loss), including the nation's 2-1 win over the Czech Republic at Euro 2024 in June. He has overseen one Benfica match (a win), one Sporting CP fixture (a 1-1 draw with PSV Eindhoven in October 2024), and one Sporting Braga game (a draw). In youth competition, he officiated a 0-0 draw between Benfica and Basel in the 2017-2018 UEFA Youth League.

Understanding the Stakes: Champions League vs. Europa League

For residents in Portugal and beyond, it's worth noting that while the Europa League (Europe's second-tier club competition) carries significant prestige, the Champions League represents the continent's elite competition. Thursday's match is crucial for Porto precisely because the club aims to reclaim continental prominence—the Europa League offers a pathway to European silverware and Champions League qualification for next season, making the stakes exceptionally high for Portuguese fans.

What This Means for Thursday's Match

Guida will lead an all-Italian officiating crew for the first leg at the Estádio do Dragão. Giorgio Peretti and Giuseppe Perrotti will serve as assistant referees, with Matteo Marcenaro as fourth official. The VAR booth will be staffed by Daniele Chiffi, with Michael Fabbri as assistant VAR. Kickoff is scheduled for 20:00 local time on April 10.

The winner of the Porto-Forest tie will face the survivor of the Bologna-Aston Villa quarter-final. That match will be overseen by Swiss referee Sandro Scharer and an entirely Swiss crew, with Stéphane De Almeida and Jonas Erni as assistants, Anojen Kanagasingam as fourth official, and Fedayi San handling VAR duties alongside Lukas Fahndrich.

The Europa League quarter-final round begins Wednesday with Sporting Braga hosting Real Betis, officiated by Germany's Felix Zwayer. The Braga-Betis winner will meet the team that advances from Freiburg-Celta Vigo, which will be refereed by Sweden's Glenn Nyberg with a mixed Scandinavian crew.

By the Numbers

Guida's recent statistics show he has officiated multiple fixtures with an average of 4.00 yellow cards per game in his recent assignments. Over his career, he averages 4.41 yellow cards, 0.24 red cards, and 0.33 penalties per match. In 17 Champions League appearances, he has not sent off a single player and maintains an average of just under three yellow cards per game—a relatively lenient disciplinary profile for a referee of his level.

For FC Porto, the challenge is clear: navigate a tricky two-legged tie against an English opponent while managing a referee whose decision-making has repeatedly drawn scrutiny. Whether Guida's presence becomes a subplot or a defining factor will depend on the quality of his performance—and whether the ghosts of past controversies remain in the past.