The manager is hopeful that four players who missed Sunday's FA Cup tie at Stevenage - Luka Modric (illness), Emmanuel Adebayor (knee), Benoit Assou-Ekotto (groin) and Rafa van der Vaart (calf) - will all be available at the Emirates.
"Luka went down with the flu and Adebayor had a knee injury, hopefully they will be okay," said Harry ahead of training on Friday morning.
"Benoit Assou-Ekotto had a little operation, but he's trained this week and is fine.
"Rafa has trained this week so hopefully he'll be fit as well. So we've not too many out. Tom's had his operation and will be out for the rest of the season, unfortunately, but most of the players will be available."
Sandro and William Gallas remain out as they recover from calf injuries.