In the Premier League, Arsenal temporarily reverted to the old system halfway through that same season, but reverted to the new numbering system for the following campaign. One of those clubs, Brighton & Hove Albion, liverpool jersey 2024 issued 25 players with squad numbers but reverted to traditional 1-11 numbering halfway through the season. The Football League made squad numbers compulsory for the 1999-2000 season, and the Football Conference followed suit for the 2002-03 season. Squad numbers became optional in the three divisions of The Football League at the same time, but only 10 out of 70 clubs used them. The traditional 1-11 numbers have been worn on occasions by English clubs since their respective leagues introduced squad numbers.