Manchester City boss Roberto Mancini was furious with Pablo Zabaleta after defeat to Everton.
Mancini was particularly annoyed with the length of time Zabaleta was off the pitch receiving treatment following a clash of heads with Tim Cahill.
"It is impossible for one player to spend eight minutes in the dressing room," said Mancini.
"He should have been back more quickly or we should change the player. I thought he would have been back after one or two minutes."
