Roy Hodgson will name his England squad for Euro 2012 on Wednesday, May 16.
All managers of the 16 nations have until May 29 to confirm their selections to UEFA.
However, reports have claimed that Hodgson has already decided upon the 23 players that will represent the Three Lions in Ukraine and Poland this summer.
One player that could be absent is Chelsea skipper John Terry, who has seen his odds of making the tournament slashed by one leading bookmaker.
England have been drawn alongside co-hosts Ukraine, France and Sweden.
