Jose Mourinho has launched a remarkable attack on Manchester City, claiming he deserves “royalties” for featuring so often in their Amazon Prime documentary and that his club’s wealthy rivals “cannot buy class” after the Manchester United manager was mocked in the series.

Speaking on Friday, Mourinho also claimed that City players and staff had prepared T-shirts for what they thought would be their crowning glory last season: beating United to win the Premier League title on April 7 at the Etihad Stadium. City led 2-0 at half-time but lost 3-2 after a Paul Pogba-inspired comeback and Mourinho joked he would waive any claim of “royalties” if City promised to send him one of those never-used T-shirts.

Ahead of his club’s game against Brighton and Hove Albion on Sunday, Mourinho said: “I haven’t seen it but I know a few things about the movie. My reaction is if you are a rich club you can buy top players, you cannot buy class. That is my first reaction.”

He added: “The second reaction is because I am in the movie I could ask for some royalties. But if they send me one of the shirts they had in the tunnel when we played there, the shirts that were saying ‘We did it on derby day’. If they send me one of these shirts, I give up about the royalties.”