Evra: Failure will mean player exodus
United beat Manchester City 3-2 in a stormy derby at the Etihad Stadium on Sunday to move six points clear at the top of the table.
But Evra is determined to avoid a repeat of last season, when the Red Devils squandered an eight-point lead in the final six games.
"I think Ferguson is going to sack everyone if we did that," Evra told several national newspapers. "I'm serious. It would not be funny, for the fans, for the players, for everyone.
"I remember what happened last year. We were eight points clear and in the end we lost the league, so a six-point lead means the league is not finished yet.
"There is a long way to go, but I really mean now we have to make sure we are ready for Sunderland on Saturday."