Kepa Arrizabalaga
Chelsea made Kepa the most expensive goalkeeper in the world when they signed him in 2018. However, his erratic displays never convinced his coaches that he was the long-term answer. Meanwhile, he became a controversial figure during the League Cup Final against Manchester City. Head Coach Maurizio Sarri tried to substitute him but there was one problem.

The young Spaniard refused to leave the field ahead of the penalty shootout. Sarri wanted to replace him with Willy Cabellero for the deciding kicks but Kepa threw a tantrum and wouldn’t leave. It was an astonishing sight and a livid Sarri kicked a bottle in frustration. Later, Kepa apologized to his coach but he lost his place for a game (via 90 Min).