Arsenal's Jack Wilshere has praised Alexis Sanchez for his first goal with the Gunners. Reuters

Jack Wilshere believes Arsenal have good options up front to cope with Olivier Giroud's absence even if Arsene Wenger decides against signing a new striker.

The manager confirmed on Wednesday that the French star will miss the next four months of matches with a broken leg suffered in the weekend draw against Everton but left uncertainty over whether he will delve back into the market to replace him.

"Giroud had surgery today from a broken tibia and he will be out for three to four months on the competition side. You ask me straight away who we will buy? I give you the answer straight away - at the moment nobody," he said.

Nevertheless, he admitted: "We are open for any position as long as we feel that the player can strengthen the squad."

And Wilshere has addressed Wenger's dilemma, claiming that Wenger still has Alexis Sanchez, Yaya Sanogo and Theo Walcott – while also Lukas Podolski and Joel Campbell can fill the gap.

"He [Alexis Sanchez] can play [as a central striker], we've also got Theo coming back and we've got Sanogo on the bench, who has improved so much. We've got good options up there," he was quoted by Arsenal official website.

At the same time the midfielder praised new signing Sanchez for scoring his first goal with the Gunners in their Champions League play-off victory over Besiktas to settle the classification.

"I think he needed that first goal. He's looked sharp in the games but if you're a striker, all you want to do is score goals.

"It was a good finish. He had a few chances and he's got great movement off the ball. He gives us midfielders something a bit different, going in behind."