The Football Association has announced that any England player selected for Euro 2012 will not be eligible for Team GB at the London Olympics.
Some leading figures, including Manchester United manager Sir Alex Ferguson, have suggested that playing two summer tournaments would be too much for the players.
The decision to rule out the possibility of dual involvement has been taken to allow international players to rest before the start of the domestic season. Team GB manager Stuart Pearce has backed the FA's decision.
"We have had discussions as we come now to notifying the long list of the players who could potentially be selected and it is important to make clear what we have agreed regarding England players who will be at Euro 2012," said Pearce on the FA's official site.
"We have agreed that any player who boards the plane to the European Championship in Poland and Ukraine will not be considered for selection to Team GB.
"It's a sensible football decision when you consider the demands on players, and it now leaves no room for doubt for players and their clubs about next summer and the two major tournaments."
Team GB will play their first Olympic fixture on 26th July.