Very simple idea
I now have
7 retired players with the number 1
7 retired players with the number 2
3 retired players with the number 3
1 retired players with the number 4
5 retired players with the number 5
2 retired players with the number 6
1 retired players with the number 7
2 retired players with the number 8
As an old fashioned club that trains players from youth to retirement, this numbering problem among retired players will only get larger and the problem more acute.
I understand that most clubs don't have this problem, but it would be nice to be able to sort it out and change the numbers of my retired players.