Arsenal boss Arsene Wenger is unsure when Alex Oxlade-Chamberlain and Danny Welbeck will make a comeback from their respective injuries.
The Frenchman will be hoping to have both offensive players available for the end-of-month FA Cup final against Aston Villa.
Defender Mathieu Debuchy will resume training on Friday and will also be assessed next week.
"He's [Mathieu Debuchy is] not in full training yet. He will be in full training on Friday," Wenger told reporters on Tuesday.
"They [Alex Oxlade-Chamberlain and Danny Welbeck] are progressing well but they will not be available for Wednesday [against Sunderland].
"I don't know [if they will be available for the FA Cup Final], let's see how they all recover next week. Danny Welbeck is not available yet, he is not in full training, so I honestly don't know.
"They all have to get fit very quickly now because there is not a long way to go [to the final].
"We have an uncertainty about Laurent Koscielny that we will check today. Everybody else I will know a bit more about after training.
"Yesterday [Monday] was a recovery day and we have not trained a lot. Today we will know much more."