#2. Iker Casillas
The infamous feud between Real Madrid legend Iker Casillas and Jose Mourinho began when Marca leaked the starting line-up of Real Madrid ahead of their game against Barcelona in the 2010-2011 season. Casillas, who had a journalist girlfriend was the first to be suspected by Mourinho which started the saga of the ‘Madrid Mole’ at the Bernabeu.
The tension came to a head between the two in 2011-2012 when after a bitterly fought match against Barcelona involving Jose eye-poke to late Barcelona manager Tito Vilanova, Casillas made a phone call to Barcelona midfielder Xavi for reconciliation after the events on the pitch. It was seen as a betrayal of the highest order for the Portuguese manager who didn’t want his captain to raise the white flag against their bitter enemies.
Things went from bad to worse in their third season for Saint Iker as Mourinho dropped him for reserve goalkeeper Antonio Adan and eventually buying Diego Lopez after Casillas had contracted an injury to his hand. Casillas, according to Diego Torres in his biography The Special One, was seen by Mourinho as “a grass, a mole, a traitor and an egoist.”
Mourinho even went on to say, “While I’m the coach of Madrid, Diego Lopez will play.”
Casillas, too made his feelings known to the world when he said about Mourinho in 2015: ‘I never spoke publicly about him at the time and I don’t think I ever will.
'People know how it was. In the end, we just did not have a good relationship.’