New signing Ebou Adams will be out for a couple of months after undergoing surgery on his shoulder, following a freak incident that saw him rip his pectoral muscle off the bone.
Adams, who was signed as a free agent from League Two title-winners Forest Green Rovers, lasted only 10 minutes in his debut outing against Cambridge United at the start of the summer.
He fell to the floor clutching his shoulder, with many suspecting it had been dislocated. However, Morison has revealed it is a far more damaging injury than that.