Fulham boss Martin Jol is convinced of great things from Costa Rican Bryan Ruiz.

Jol said Ruiz has struggled since his £10.6million move from FC Twente on deadline day owing to a knee injury but compared the 26-year-old's talent to Chelsea star Juan Mata, who has impressed since moving from Valencia last summer.

The Dutchman said: "Ruiz was a star in Holland and you saw against Everton, Arsenal and Bolton that he is somebody who can make the difference.

"I feel his best position is probably infield in a 4-3-3 like Juan Mata. Its one thing we have to think about in the future. He can play with a flank player, on the right himself or even as a second striker.

"When he came over he had an injury. I couldn't expect him to do the business from the start. Of course you want that, but it was impossible.

"Then after three weeks he had an injury again - the same one, the knee. But he will say: 'I'm fit now'.

"Ruiz will be an important player for us. If you talk about the season after next season it would be a bit late. Hopefully he can show his productivity in the next couple of months."