Mourinho was sacked by Manchester United after a poor performance since he took over the club two-and-a-half years as manager.
The 56-year-old has been replaced by a caretaker manager, Ole Gunnar Solskjaer.
During his spell as a manager at Manchester United, Mourinho won an EFL Cup, FA Community Shield, and Europa League.
Speaking in an interview with BeIN Sports, Mourinho said: “It’s been two and a half months since I’ve been without coaching and I’m already preparing for my next challenge.
“I know exactly what I don’t want, that is why I’ve turned down three or four offers.