Manchester City will be unable to call upon the services of new £19million signing Jo in the opening weeks of the new season after he was named in Brazil's squad for the Olympic Games.
The 21-year-old striker joined City last week from CSKA Moscow, but is now likely to miss the first three games of the new Premier League season - against Aston Villa, West Ham United and Sunderland.
Jo, who found the net 44 times in 77 games for the Russian side, has been joined in the 18-man squad by fellow English-based players Anderson of Manchester United and Liverpool's Lucas Leiva.
Meanwhile, City have confirmed the departure of first-team coach Derek Fazackerley following Mark Hughes' arrival as manager last month.
Fazackerley, 56, worked under former managers Kevin Keegan, Stuart Pearce and Sven-Goran Eriksson during seven years with the club.
The former England coach has already been linked with a move to Newcastle United where he would be reunited with Keegan.