Arsenal manager Arsene Wenger is sweating on the fitness of skipper Cesc Fabregas, who has a chance of making the crunch encounter with Chelsea at Stamford Bridge on Sunday.
The Spaniard remains a doubt as he looks to shake off his lingering ankle injury, and the Gunners will be desperate for their captain to make a late fitness test.
Meanwhile, Wenger could be faced with a selection dilemma with underfire goalkeeper Manuel Almunia's fitness in the balance for the clash at Stamford Bridge.
Lukasz Fabianski had a stormer against Partizan Belgrade in midweek and, after Almunia's horror show performance against West Brom, Wenger has a tough decision to make.
Wayne Rooney and Paul Scholes will be missing for Manchester United to join Antonio Valencia, Ryan Giggs and, of course, Owen Hargreaves on the sidelines.