Santi Cazorla feels Arsenal can go for the title with Alexis Sanchez now signed. The former Barcelona attacker completed his move yesterday.
"It is a very important signing," said Cazorla, at the launch of Arsenal's new PUMA kit. "He's a world-class player - I've said it before. Having him at Arsenal night make a big difference just because of the player he is.
"If you bring in players of an outstanding level, it will lift the team to an outstanding level.
"The more quality players you have in your squad the more you can fight and we were unlucky with injuries last year.
"Having another fast player in the squad like Alexis will also give us extra opportunities going forward next year."
When asked if Arsenal could win the league, the 29-year-old said: "Absolutely. Absolutely. If we have an even better squad than last year then why can't we be champions this year?"
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