Derek Carr's most recent shoulder injury in week 14 that ended his season last year, the one that led to his retirement from the NFL, was the finding of several labral tears as well as very significant degenerative changes to his rotator cuff in his right shoulder. When the rotator cuff tissue is severely degenerated like in Carr's case, repair might be extremely complex to impossible (like trying to repair wet toilet paper), and alternative options like tendon transfers or reverse shoulder replacement which might be considered and would not allow for return to QB play at an acceptable NFL level.
With return to play, especially at an acceptable level being very unlikely, Carr has probab