Arsenal manager Arsene Wenger says he will wait until the very last minute before taking a decision on whether to start with Laurent Koscielny against Watford.
The Gunners host Quique Sanchez Flores' side on Sunday at the Emirates with Per Mertesacker and Gabriel Paulista both expected to be fit.
Midfielders Aaron Ramsey and Santi Cazorla will only be back from injury next month.
"From the Hull game we lost [Aaron] Ramsey. Gabriel [Paulista] and [Per] Mertesacker came off injured but should be available," Wenger said.
"[Laurent] Koscielny is not far. Will I risk him or not? There is a little medical risk but I have not made a decision yet.
"[Francis] Coquelin is coming back from suspension and Bellerin was not in the squad. He is now available.
"[If they trained?] Gabriel no, Mertesacker yes. I don't think they have lost too much fitness. We will see. I will make a decision tomorrow. My gut feeling is that Gabriel will join in tomorrow and be available.
"I don't believe that [Aaron Ramsey will be out for the season]. At the moment his clinical signs are quite positive. I would say four weeks.
"He [Laurent Koscielny] has to join in normal training tomorrow and then it is for me to [decide whether] take a gamble on a guy that has had one training session with the group or not.
"They [Petr Cech, Jack Wilshere and Santi Cazorla] are all progressing nicely, but this week and next week they have no chance."