Socceroo Harry Kewell is confident of shaking off an ankle injury in time to prove his critics wrong in Liverpool's clash will Fulham in the English Premier League this weekend.

The former Leeds player scored for Australia against the Solomon Islands this week before picking up the injury, and is determined to prove his doubters wrong after taking stick for his inconsistent performances this season.

"I know I can do a lot better," Kewell said.

"There are things I have to improve on and there are things the team has to improve on as well. There is a lot more to come from me.

"But I am one of my biggest critics where football is concerned, I always think I can do things better and I am quite sure my form will improve over the rest of the season.

"We have a new manager and it is a transition time for all of us. The boss will get the best out of the team and out of the players.

"The important thing is I know what I am capable of. If people want to criticise me then fair enough, but I know what I can do and I am quite sure I will do it. I would like to see where the critics go then."

Kewell spent the last week with the Australian squad, and played in the second leg of the home and away tie against the Solomon Islands which Australia won 11-1 on aggregate.

The Liverpool star scored his first goal of the season in the opening period when he smashed home Brett Emerton's header from close range, but he failed to appear after the break when coach Frank Farina decided against taking any risks with his fitness.

But Kewell, who has suffered from ankle problems over recent months, insists he will be ready for action at Craven Cottage this weekend.

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