Spurs have fired their Portuguese coach just six days before they meet Manchester City in the Carabao Cup final at Wembley, and Rooney believes there is no-one better to outwit Pep Guardiola than Mourinho.
"I think it's crazy doing it before a cup final," said Rooney, who worked with Mourinho at Manchester United. "It's strange timing anyway. Surely they could have waited until after the cup final if that's the direction they wanted to go in.
"Mourinho is a manager who loves winning trophies, that's quite clear to see. He's won a lot of trophies throughout his career.
"If there was one manager to set up a team to play against Man City in a cup final it's Jose Mourinho. Tottenham haven't had the best of seasons so from that point of view so it's crazy and a massive risk.
"I'm sure Daniel Levy could have waited until the day after the game, that would have made more sense if they wanted to get rid of Mourinho."