Paul Scholes feels Manchester United's stability has been the key to their success.
Scholes, who made over 650 appearances for United and won 10 Premier League titles, feels longevity is one of the secrets behind the club's continued dominance of the English game.
"You have to give credit to the people who run this club," he said.
"Chelsea have just sacked their manager a year after doing the Double. Sticking with people is the best thing to do but not many clubs seem to be following United.
"That is all the better for us. If these teams keep sacking managers that is great."
