Soccer:Arsene Wenger is "very optimistic" Samir Nasri will extend his contract with Arsenal - and sees no reason why all the current squad cannot fulfil their desire for success at the Emirates Stadium.

The 23-year-old France midfielder Nasri and full-back Gael Clichy are moving towards the final year of their current deals. Wenger is determined to keep hold of the group, building the team around captain Cesc Fabregas and England teenager Jack Wilshere.

"We are talking to Nasri and his agent already and we have the same situation with Clichy," the Gunners boss said. "We have agreed to speak about it during the summer. The players have the opportunity here to do it in their own way, with their own philosophy, with their own togetherness.

"When you sign a contract for four or five years, you are committed through your contract to win trophies with the club where you sign. It is in no contract that if you do not win a trophy the first year, you can leave."

Wenger maintains Arsenal will continue to have an "absolute commitment to youth" as they look to stay ahead of the likes of big-spending Manchester City.

However, the Gunners boss also suggested he was ready to add "what was needed" this summer to keep his squad competitive.

"Nobody asks them to wait. We can win straight away," Wenger continued. "You speak like the players are not responsible for winning trophies. They are as well responsible, as I am, as the fans are. Why do you think we pay the players? A club, a football team, is a togetherness between the manager, the players, the club, the philosophy, and a commitment.

"After that you can have some individual situations, but it cannot be a philosophy that if at any time we do not win I should move on. It is down to belief, the direct consequence of the motivation you put into your next game.

"If your belief is very low, your feeling is very low. What I think we can get from our performances is the belief that we have the quality."

Wenger takes his side to Bolton on Sunday afternoon fighting to stay in the title race after another missed opportunity to close the gap on leaders Manchester United when they drew 3-3 at Tottenham having at one stage held a two-goal lead.

The Gunners boss, however, maintains all is not yet lost.

"We are fighting for the championship and I am always sitting in a position where you force me to explain why we fail," Wenger said. "For me it's not a comfortable situation because we are fighting in a period where the most important thing is to have belief in what we do and you keep saying 'why have you failed to win?'.

"Let's just play for it first and have a go. For me it is important to give absolutely everything until the last game of the season, to be proud, and then, as I have said many times, if there has been somebody better we will have to accept that.

"But at the moment I don't accept that there is somebody better."