Man City boss: Form not price tag will decide Robinho's future
Since Mancini's arrival Robinho has started only one game, although he did make a brief substitute appearance against Blackburn on Monday as City climbed into the Premier League's top four.
"How much a player cost is not important," said Mancini.
"What you pay only matters when you are in the act of buying someone.
"The important thing after that is the player working hard and playing well.
"But it is possible he will play (against Everton), although I do feel sorry for the attacking players because I have five or six really good ones and I must decide who is going to be on the bench."