"Obviously his people have been negotiating with [chief executive] David [Gill] about a new contract but I don’t know what stage we are at with that. But we won’t be letting him go."
Sir Alex was also quick to refute reports that a deal has already been agreed to bring Borussia Dortmund striker Robert Lewandowski to the club at the end of the season.
"It's nonsense," he asserted. "Absolute nonsense."