Everton boss Roberto Martinez still wants more from Romelu Lukaku.

Lukaku has now plundered 21 goals in 2015 for Everton after scoring in the thrashing of Sunderland last weekend.

“It is too early to assess if he has ever played as well," Martinez told the Liverpool Echo.

“When you go into an assessment of a player and what they are showing, you need to wait until the end of the season.

“But what we all know is that Rom is a striker that has absolutely everything.

“He is a very, very young man as well and because of the work he puts in on the training ground, he is becoming stronger.

“He still has a long way to go but that is the potential he has and I look forward to seeing Rom being consistent throughout this campaign and doing what he has been doing in the last calendar year."