Fletcher has suffered no adverse reactions in his comeback since returning to training last Wednesday after almost three weeks on the treatment table with an Achilles injury.
The Scotland international was in contention for a place among the substitutes at the Emirates on Saturday, before Sunderland opted not to risk the 26-year-old, who has struggled to hit the heights of his maiden season on Wearside.
Gus Poyet: “If he had been on the bench and he could have played 20 minutes, then we would have put him in.
“But I didn’t want to have that dilemma of making him play more than he should.
“You can always get another injury as the main striker.
“He trained with us on Saturday, and he’s a possibility for the team at the weekend.”