Jose Mourinho has urged his players to come out of their "comfort zone" in order to have success at Manchester United.
The Red Devils are unbeaten in 14 Premier League matches, but a succession of draws have left them languishing sixth in the EPL table, four points out of the Champions League places.
Speaking to the media ahead of his side's trip to the King Power Stadium for a match against Leicester on Sunday, Mourinho claims that some members of his squad haven't adapted to his methods yet.
"I don't know the players very well. I didn't know that some players need time to live with this, because it must be part of your natural habitat," Mourinho said.
"Play to win, responsibility to win, cope with the pressure to win. This is something that has to belong to your natural habitat. For some guys, it doesn't.
"They also need that time to go out of their comfort zone or a zone where they are protected that we assume the objective is not to win, that also takes time.
"Something in football that doesn't change, especially in my mentality, is the desire to win, the responsibility to win, the feeling that I'm never happy with myself, that I always want more from myself.
"I don't accept anything that is good. You don't want good, you want very good.
"That is something I always fight for every day for the people that surround me – players, assistants, medical department, everybody."