Manchester United and Manchester City are in contact with Juventus for Paulo Dybala.
El Confidencial says Dybala is at the centre of a major transfer tug-of-war this summer.
A number of the world football's biggest clubs are eager want to sign the Juventus forward.
United, Manchester City, Real Madrid and Barcelona are all said to be interested in the 23-year-old Argentina international.
Red Devils boss Mourinho reportedly sees him as the long-term successor to Zlatan Ibrahimovic at Old Trafford.