Manchester United have been warned over Torino's asking price for Angelo Ogbonna.

Sir Alex Ferguson has been told he must cough up at least £16million to land centre-back Ogbonna from Torino.

The Manchester United boss has been tracking Ogbonna since the start of the Serie A season - with Old Trafford scouts running regular checks on the defender.

Toro sporting director Gianluca Petrachi confirmed: "Last year we refused £10m for him but it is clear he is worth more than £16m.

"Angelo has the desire to do better but I believe he should continue to grow with Torino."