It’s been widely reported that Mourinho, 63, is expected to return to Real Madrid following a second consecutive trophyless season.
Real Madrid’s season has been far from ideal, with players physically fighting each other and members of staff across several training ground bust-ups.
Casillas, who reportedly had a huge falling out with Mourinho during the manager’s first spell in 2010-13, has now weighed in on the situation.
Taking to X, formally known as Twitter, Casillas said: “I have no problem with Mourinho. He seems like a great professional to me. I don’t want him at Real Madrid.
“I think other coaches would be better equipped to coach at the club of my life. Personal opinion. Nothing more.”
