The 26-year old has been out of action since last year after three surgeries on a persistent knee injury.
"I am hoping to be ready to go straight back into training when all the lads come back," Thomas said
"Then I have a month to prove myself to the manager to try to get a new contract."
Thomas saved
Thomas, however, has yet to show current manager Kenny Jackett just what he can do following as a result of his extended absence from the game
"He hasn't seen what I can do but I am hoping to change that when everybody starts training again," Thomas added.