Manchester United legend Roy Keane doesn't expect Sir Alex Ferguson to 'do a Guardiola' and quit should they lose at Manchester City.

Keane wrote in his column for the Sun on Sunday: "Don't expect Alex Ferguson to be following Pep Guardiola out the managerial exit door if things don't go his way at the Etihad Stadium tomorrow night.

"That's not his style. He doesn't allow himself to be affected by one result or missing out on one trophy because he always has his eye on the bigger picture.

"Look at how he reacted to losing last year's Champions League final. He didn't become despondent but he realised he needed to make changes to his squad and did that last summer.

"I fully expect United to get the result they need tomorrow night but win, lose or draw that game - and in effect the league - Ferguson will still be manager at Old Trafford next season.

"Of course it would be a blow to be beaten by City but these are the sort of challenges you expect to face at big clubs.

"And Ferguson has been around long enough to know how to deal with, and rise to them. "