Barcelona manager Xavi was the only man to spot a mistake in the statue commemorating Diego Maradona inside Napoli's stadium.
Maradona, who died in 2020, played for both Barcelona and Napoli in his career with both clubs facing off in the Europa League round of 32.
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Thursday saw Xavi take his Barcelona side to the Diego Maradona Stadium and inside is a tribute to the Argentina legend.
The 42-year-old is a student of the game and while being shown the statue, he spotted an error and had to point it out.
Maradona's strongest side was his left, but the statue has him controlling the ball with his right thigh.
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Xavi remarked: "How pretty. The only problem is he’s carrying the ball with his right leg but he was left-footed."
Spanish publication Marca claim everyone else in attendance was left 'blown away' at Xavi's attention to detail.
Barcelona would go on to in 4-2 on the night and 5-3 on aggregate to advance to the last 16.
It's the first time the Blaugrana have been in Europe's second-tier competition since 2004 and they're arguably favourites to win it now.
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They've been reborn under Xavi's management and he made a number of quality signings in January.
Dani Alves returned to the club as a free agent and Ferran Torres arrived early in the window.
Pierre-Emerick Aubameyang and Adama Traore would follow in the final week of the window and results have picked up.
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Xavi told UEFA's official website after overcoming Napoli: "We pressed well, high up, whenever we lost the ball…just like we did at home.
"Napoli pressed high up and spaces were available in behind them. From defending a corner, we made a textbook counterattack.
"We took advantage of our fast players. We understood how to create and use a ‘free man’. I’m very happy for the team."
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Barcelona have been drawn against Turkish side Galatasaray in the last 16 and they will face off next month.
Topics: Diego Maradona, Xavi, Barcelona, Napoli, Europa League