England coach Roy Hodgson has added Dr Steven Peters to his World Cup staff.
Peters, a psychologist, has been doing some work with Liverpool this season.
"It is not just any psychologist," he said.
"It is Dr Steve Peters who is a very famous man in that area.
"He has a great CV of working in different sports and has been doing some work with Liverpool and Brendan Rodgers so Steve knows him well.
"It is something we have spoken about for some time but we wanted to get the right man - luckily Brendan allowed me to speak to Steve Peters and he has accepted our invitation so we are very pleased about that.
"We are really happy that we got the man we wanted, someone who can understand the football environment and join us rather than lecture to the players."
