The Rhode clubman sustained the injury before the Tailteann Cup semi-final.
Offaly stalwart Niall Darby believes his intercounty career is "probably finished" after a serious knee injury last week.
The 34-year-old Rhode clubman suffered a cruciate injury while training with the county ahead of the Tailteann Cup defeat to Westmeath yesterday.
Speaking to Midlands 103 after the game yesterday, Niall said it was a serious injury and outlined the tough recovery ahead:
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