The manager was due to reveal the 23-man party on Thursday but had decided to wait until after the final Premier League matches of the season.
Those games take place on Sunday and the delay diminishes the chance of a player being named in the squad and having to withdraw because of injury.
Arsenal’s Danny Welbeck, who would have gone to the finals in France, has been ruled out of the tournament after sustaining a knee injury at Manchester City on Sunday. The forward faces several months out and may require surgery.
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