Mourinho had a hugely successful spell at Chelsea before joining Inter and he believes Mancini, who has been out of work since leaving the Nerazzurri in May 2008, is a good fit for ambitious City.
"It will be a great and special experience for him to test himself in a very different reality to Italian football.
"The Premier League is completely different to what he has known so far.
"Mancini is a good coach and has an owner (Sheikh Mansour) who spends a lot of money.
"I don't see why he shouldn't be happy in England."