It's going to be a tough one for Arsenal to manage actually because having their captain and a key player suffer injury is not only affecting the team but the players psychology could be in a messy state too because they need that leadership on the pitch who helps them put things in order and also the fact that he doubles up as a key player to the team is challenging too. For the while he will be away, Arsenal could just try to make sure not to suffer so much of a decline rather maintain a pase around what they have got already and that way they can still be sure of making a way to stay in the title race this season, this has to be one of the disadvantages of have strong dependence on a particular play in a team.