Wigan Athletic boss Roberto Martinez has called on striker Franco Di Santo to become a more consistent player.

The 22-year-old has found the net four times in 20 appearances for the Latics this season.

"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 Evening Post. "He's still a young man, but he's clearly ready to take on more responsibility.

"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. He will develop into some player."

Wigan, who sit bottom of the table, host Aston Villa on Saturday.