The three players whose contracts are not being renewed - Jonny Evans, Victor Lindelof and Christian Eriksen - will officially depart, leaving their shirt numbers up for grabs.
Evans took on the no.35 when returning for his second stint at his boyhood club, after previously wearing no.6, so this is one slot that is available to be filled.
Fellow defender Lindelof has had no.2 on his back since joining the Reds from Benfica in 2017.
Traditionally associated with a full-back, there may be some options in this regard if that particular route is explored.