The trio signed new one-year deals this seasons, that will keep them playing at least until next summer.
United boss Sir Alex Ferguson is keen to keep them at the club as coaches.
“They are the living proof for young players that the United system allows players to succeed,” Ferguson told L’Equipe.
“When they stop playing, they will stay. All three are taking their coaching diplomas. I don’t think the club will pass up that much experience.”