Confirming the news to the Official Club Website, Town Physio Matt Byard said: "The scan has shown that Jon has ruptured his ankle ligaments and unfortunately that means he won't play again this season.
"The plan now is to take specialist advice to see the cause of action from here but surgery is obviously a possibility.
"We will be guided by the specialist and also to Jon to see what the best way forward is in his recovery but I can see his rehab continuing into the summer."