The Hungary international was initially sidelined after ankle surgery and then ruptured his cruciate knee ligaments during the clash with Tottenham in December.
Gera said: "Hopefully I will be ready for the first game of the season against Liverpool. I look forward to starting the season and in a couple of weeks I should be able to train fully with the team.
"I'm looking forward to playing again but I don't want to rush things and, if I need more time, that's fine. I want to be 100% and, as soon as I'm ready, I will want to play."