Rob Hall is set for a lengthy spell on the sidelines after rupturing the anterior cruciate ligament in his knee.
He will undergo an operation before beginning his rehabilitation.
Meanwhile, it has been confirmed David Martin will also miss the remainder of the 2015/16 campaign with a fractured hand.
Hall scored twice in 32 appearances after joining the Dons on a deal until the end of the season back in July, while Martin kept 11 clean sheets in 37 starts.
The Club would like to wish both Rob and Dave a speedy and full recovery.