The talented midfielder has just been ruled out for another three months with injury, ending his chances of contributing towards the club’s quest to win their first league title in over a decade.
Despite the personal disappointment, Rosicky remains optimistic over his side’s chances, although he admits the Gunners can’t afford any more slip-ups following a run of four games without a win.
"There are plenty of games in front of us. All the big teams are playing against each other so it will be very interesting and I believe we have what it takes to win the league this year," Rosicky said.
"It’s one of the best [Arsenal sides I have played in] because we have some world-class players here. I feel we have what it takes to win the league but we are not allowed to have any more slip ups."
Arsenal came into the New Year topping the Premier League table yet a run of three draws and a defeat in their last four matches has seen Leicester City, Manchester City and Tottenham Hotspur overtake them.
Performances on the whole have still been good, though a lack of bite in front of goal - especially in the recent 0-0 home draw with Southampton - has ultimately cost them.
On Sunday, Arsene Wenger’s men travel to the south coast to take on an ever-improving Bournemouth side in what could be a tricky afternoon for the visitors.
With Manchester City hosting Leicester City this weekend, points will be dropped and Arsenal need to capitalise with a victory - failing to do so will prove very detrimental to their title chances