Aaron Ramsey has not made the trip to Germany as Arsene Wenger prepares his Arsenal side for a tough Champions League clash with Schalke.
Ramsey, who was subbed at Old Trafford after 50 minutes, is understood to have picked up a groin problem, while Theo Walcott, who replaced the Welshman, has travelled but is thought to be suffering from illness.
The possible double absence further stretches a squad already struggling to cope without the likes of Alex Oxlade-Chamberlain, Gervinho, Abou Diaby, Kieran Gibbs, Tomas Rosicky and Polish keepers Wojciech Szczesny and Lukasz Fabianski.
At the back Laurent Koscielny will no doubt be chomping at the bit for first team action having watched from the bench at Old Trafford as Thomas Vermaelen and Andre Santos put in error-riddled performances.
It’s possible the Brazilian could be replaced at left-back by his Belgian captain with Koscielny partnering Per Mertesacker in the centre of defence.
Full squad for match vs Schalke