MOURINHO is reportedly pondering a summer exit from the Santiago Bernabeu and the 49-year-old was spotted in London, with Spanish sources suggesting he was looking at houses.
“I have no idea,” Casillas told Onda Cero. “I do not know what he will or will not do.
“The same thing can happen to me. Perhaps tomorrow I will want to leave. No one knows what can happen.”
Mourinho has previously suggested that he would like to return to the Premier League in a couple of years, describing England’s top flight as his passion in football.
The Portuguese has been linked with the Chelsea hot-seat as compatriot Andre Villas-Boas reportedly does not have the backing of the entire squad, including influential midfielder Frank Lampard.
In February, Porto president Pinto da Costa stated that several of Chelsea’s players remained in touch with Mourinho and noted it was one of the reasons behind Villas-Boas’ modest success at Stamford Bridge.
Los Blancos are currently 10 points ahead of Barcelona at the top of the Primera Division table.