Arsene Wenger revealed Jack Wilshere had returned to light training yesterday ahead of the West Ham game, but was not pictured with the rest of the squad.
The midfielder has been out with a fractured foot since early March, injured in an England friendly with Denmark.
He had been pencilled in for a return in late April, possibly the home fixture against Newcastle, a fortnight ahead of the FA Cup Final against Hull.
This morning (Tuesday), Wilshere confirmed via Twitter that he is back in his boots and stepping up his comeback from injury, a major boost as he nears a return.
With Koscielny, Ozil, Rosicky and even Abou Diaby pictured back in training for United yesterday, Arsenal's injury troubles are finally showing signs of improving.