3) Season over already
This season is already over – Arsenal aren’t going to win the league or the Champions League, they’re out of the League Cup and all there is to look forward to is the FA Cup and the fight for fourth. Now is as good a time as ever to bring in a new manager and start afresh, with the rest of the season essentially a long pre-season for the next coach to prepare for the future. While it is inexcusable for a club of Arsenal’s size to be making this admission already, they might as well take a gamble and make the most of it.