29-year-old Joseph told the Western Daily Press: "I've got to speak to the gaffer but I hope we can work something out. It's frustrating that I got injured because I want to be playing and helping the team.
"But the injury is improving all the time and I should be able to play again soon."
Joseph is behind the likes of Leon Cort, Sam Collins, Damien Delaney and Danny Coles - who will be fit again at the end of the season - for a centre back place.