Stuart Pearce has confirmed he will not select any player for Team GB at the Olympics if they have been part of the England squad for Euro 2012.
Pearce, the coach of the Great Britain men's team, had initially been keen not to rule out that option but has now accepted that it is "a sensible football decision".
It means players such as Arsenal's Jack Wilshere and Manchester United's Phil Jones and Chris Smalling, who are almost certain to go to Euro 2012 with England, will not be part of the Olympic team even though they are under 23. The same applies to Wayne Rooney, who could have been selected as an over-age player.
Pearce said: "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.
"We have agreed that any player who boards the plane to the European Championship in Ukraine and Poland will not be considered for selection to Team GB.
"It's a sensible football decision," Pearce added, "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."
The Football Association this week began notifying home associations and players on a long list for potential selection. Players are asked to confirm whether they would be available for selection.
Pearce's announcement will please club managers such as Arsenal's Arsène Wenger and Manchester United's Sir Alex Ferguson, who have said it would be too much for players to take part in both tournaments.
It has also been revealed the Olympic Stadium could have retractable seating installed over the running track after the London 2012 Games to make it more attractive to football fans.
West Ham United, who are favourites to be chosen as the tenants, are looking at having the retractable seating as part of their new bid for the stadium.
The new tender process for the stadium is due to be announced next week and West Ham are the favourites to be chosen as the tenants.