Manchester United boss Sir Alex Ferguson will have to make do without David de Gea in his pre-season plans after his No 1 goalkeeper was drafted into Spain's preliminary Olympics squad.
Euro 2012 final goalscorers Juan Mata and Jordi Alba are also included in the European Champions plans ahead of the London Games.
Champions League winner Mata is joined by Chelsea colleague Oriol Romeu in the 21-man party to face Senegal and Mexico later this month.
London calling: Euro 2012 hero Juan Mata is in Spain's preliminary Olympics squad
Mata's involvement in Ukraine and Poland will not raise questions from Stamford Bridge officials, however, after he agreed his commitment to Spain's Olympic plans with the west London club.
He said earlier this month: 'I have confirmed with Chelsea that I can play the Olympics.
'It's something I have agreed with the Spanish federation, and I don't want to change.
'My dream is to play and win the gold in London. After winning a lot with Chelsea last season, that would be another great honour.'
Cities & Stadiums
The Top 3 Teams of Previous Tournaments
|2008||Spain||Germany||Russia / Turkey|
|2004||Greece||Portugal||Netherlands / Czech Republic|
|2000||France||Italy||Netherlands / Portugal|
|1996||Germany||Czech Republic||France / England|
|1992||Denmark||Germany||Netherlands / Sweden|
|1988||Netherlands||Soviet Union||Italy / West Germany|
|1984||France||Spain||Denmark / Portugal|
|1972||West Germany||Soviet Union||Belgium|