Wigan Athletic boss Roberto Martinez is convinced former Chelsea striker Franco di Santo is destined for big things.

He says the sky's the limit if Di Santo lives up to his potential.

"We all know the potential Franco has as a player, but he has only shown flashes of the real quality I know he possesses," Martinez told the Wigan Observer.

"Probably the biggest challenge for Franco is to show that kind of performance on a regular basis in the Premier League.

"If he can do that, his football - and that of the team - will go on to a different level."