
a squad number which is no longer used as a form of recognising an individual player's loyal service to the club. Sometimes a number is retired as a memorial after their death.[226][227]
Found on
http://en.wikipedia.org/wiki/Glossary_of_association_football_terms

Retiring the number of an athlete is an honor a team bestows upon a player, usually after the player has left the team or retires from the sport. Once a number is retired, no future player from the team may wear that number on their uniform, unless the player so-honored permits it. Such an honor may also be bestowed on players who had highly memor...
Found on
http://en.wikipedia.org/wiki/Retired_number
No exact match found.