Mourinho and Wenger had a long-standing feud, with Mourinho famously calling Wenger a “specialist in failure.” Their battles in the Premier League were legendary, with Chelsea often getting the better of Arsenal under Mourinho’s management. Mourinho and Guardiola’s rivalry intensified during Mourinho’s time at Real Madrid, where he was brought in to challenge Barcelona’s dominance. The clashes between Real Madrid and Barcelona in 2011, including fiery El Clásico encounters, remain some of the most intense matches in football history. Their rivalry continued in the Premier League when Mourinho took charge of Manchester United and Guardiola led Manchester City.
