Arsenal defender Gabriel Paulista has recovered from a hamstring problem to travel to Monaco for the second leg of the Champions League last-16 second leg tie.
Club captain Mikel Arteta has also returned to training after his ankle injury, but midfielder Tomas Rosicky was another not part of the European match squad after illness.
Midfielder Alex Oxlade-Chamberlain (hamstring) remains out, along with Jack Wilshere (ankle).
Manager Arsene Wenger said: "Monaco is in a very strong position, but we have experience, the desire and belief we can do it.
"We want to give everything to have the greatest performance on the pitch. If we did not believe we could do it, we would not be here.
"The statistics are against us. The result in the first leg is against us. We are conscious about that.
"But no matter how big the percentage (chance) is, we have to give absolutely everything to make the stats lie, that is our desire and belief that we can do it."
Provisional Squad: Ospina, Monreal, Koscielny, Mertesacker, Bellerin, Coquelin, Cazorla, Ozil, Sanchez, Welbeck, Giroud, Szczesny, Walcott, Ramsey, Chambers, Gibbs, Gabriel, Flamini.
