Manchester United boss Jose Mourinho has fired a warning at Juventus over a deal for Cristiano Ronaldo.

The Old Lady were finally about to convince Ronaldo to leave Real Madrid after nine years this transfer window, and landed the five-time Ballon d'Or winner in a deal worth £105million.

Mourinho told ilBiancoNero: "Fantastic for Italian football: The Bianconeri will dominate for years and now it will be even easier with a player of His qualities.

"But, I think it can be extra motivation for rivals.

"Maybe this supremacy of Juventus can give AC Milan, AS Roma, Inter Milan and Napoli to boost in the title."