Arsenal have a chance to stretch their legs at the top of the Premier League as they face West Ham on Sunday afternoon, but they will do so without William Saliba.
The French international has been out of action since March, when he suffered an injury in the Europa League meeting with Sporting CP. He is expected to return to play a part in the run-in, but the trip to the London Stadium comes too early.
Manager Mikel Arteta has a chance to complete a perfect run of London derby results, with his team winning their previous five without conceding a goal. It is also a chance to complete a league double over the Hammers after a come-from-behind 3-1 win on Boxing Day.