Arsenal will be without Jack Wilshere and Lukas Podolski for Wednesday's Champions League last-16 second-leg clash at Bayern Munich.
Wilshere and Podolski have ankle injuries but left-back Kieran Gibbs is available again after his thigh problem and midfielder Abou Diaby (calf) has travelled along with Russian Andrey Arshavin.
Defender Nacho Monreal is ineligible for Europe while full-back Bacary Sagna (knee) remains out.
Bayern forward Franck Ribery will miss the game at the Allianz Arena, while midfielder Bastian Schweinsteiger and defender Jerome Boateng are both suspended.
Former Chelsea winger Arjen Robben, meanwhile, was not involved at the weekend against Fortunate Dusseldorf because of a calf problem.
Bayern, though, have the likes of Brazilian Luiz Gustavo and Switzerland midfielder Xherdan Shaqiri ready to come in as Jupp Heynckes' side look to protect a 3-1 advantage from the first leg.
The Israeli defender arrived at Celtic in January on loan from Standard Liege but has only made two appearances, both in the Highlands.
Gershon scored on his debut in a 3-1 victory over Inverness but a thigh injury hit him before he returned to the line-up in a three-man Celtic defence against Ross County on Saturday.
The 24-year-old was replaced by Kris Commons on 65 minutes with the scores level before County took control and secured a late 3-2 win.
Celtic manager Neil Lennon admitted his side looked "ragged" at the back at times on Saturday and Gershon is looking to get on top of his game.
"I've had a bit of bad luck as since I came as I've had two small injuries that took me two weeks to recover from, so this put me on the back foot," Gershon told the Celtic View.
"But now I'm starting to get fit. The most important thing for me is to stay fit as the two games I've played is very far from what I can do in terms of my skills. But I'm sure I can come back to the level I know I'm capable of.
"I feel good. I need more confidence that comes with playing more minutes and then I am sure I can come back to the Rami I know.
"I can give you a lot of excuses now - a new country, a different style of football and injuries - but no-one cares about that.
"I have to take my chances and be good all the time. This is how I think. And this is the goal I have in my head now."
