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The Republic of Ireland international was thought to be just weeks from a comeback after being allowed to resume full training with the first team.
The 24-year-old signed from Stockport in the summer, and the ex-Hatters captain is yet to make a competetive appearance for United.
In fact, he has only made one appearance in total. That came in the 4-0 pre-season victory over Winterton Rangers in July where he picked up the injury going in for a tackle.
Iron boss Brian Laws told United's Official Website: "After the reocurrence the specialist has no option but to investigate the problem with surgery.
"This is a massive blow for Jim and the club."
The 24-year-old signed from Stockport in the summer, and the ex-Hatters captain is yet to make a competetive appearance for United.
In fact, he has only made one appearance in total. That came in the 4-0 pre-season victory over Winterton Rangers in July where he picked up the injury going in for a tackle.
Iron boss Brian Laws told United's Official Website: "After the reocurrence the specialist has no option but to investigate the problem with surgery.
"This is a massive blow for Jim and the club."