Alex Oxlade-Chamberlain became the latest Arsenal midfielder to return to full training on Saturday, but faces a race against time to be back playing before the end of the season.

Oxlade-Chamberlain has been out since injuring his knee against Barcelona in February, but Arsenal published pictures of him back in training with the squad ahead of their trip to Sunderland on Sunday.

Jack Wilshere, Santi Cazorla and Tomas Rosicky have also returned to training in recent weeks, with Oxlade-Chamberlain the last long-term absentee to come back.

Wilshere could be in the squad on Sunday after playing three games with the under-21s, but Arsene Wenger said both Oxlade-Chamberlain and Cazorla need more time.

Arsenal only have three games left after Sunday's match, though, meaning it will be hard to find playing time for all four midfielders.

"They are not ready yet and I haven't decided yet, but there are not many games left," Wenger said about Oxlade-Chamberlain and Cazorla, adding that they could first play with the U21s as well.

Wenger said after Thursday's win over West Brom that he was still undecided about whether to include Wilshere in the squad against Sunderland or wait until next weekend's home game against Norwich. Wilshere is desperate to prove his fitness in order to earn a spot in England's European Championship squad.

"At the moment I do not know if I will take him on Sunday or not. Should I take him, you cannot plan that he will play a part in the game," Wenger said. "He made a big improvement in the third [U21] game. In the first two he was all right, but in the third he found his burst back, the little change of pace. If I don't take him this weekend, I will take him the weekend after, certainly."