Manchester United boss Jose Mourinho is ready to get serious about Real Madrid midfielder Isco.

The Sun says they will go head to head with AC Milan for Isco.

It's a potential move that could spell trouble for United captain Wayne Rooney who could fall even further down the pecking order at Old Trafford.

Mourinho is still on the hunt for top quality additions to the squad this season as he looks to mount a Premier League title challenge.

Mourinho has identified Isco and wants to bring the Spanish international to Old Trafford in January, according to AS.

Before the Spaniard move to the Bernabeu, he was heavily link with a move to Manchester City to link up with his old Malaga boss Manuel Pellegrini.