Manchester United legend Bryan Robson says Sir Alex Ferguson has benefited from the work of his backroom staff.

Robson has been impressed with the work of Ferguson's assistants Mike Phelan and Rene Meulensteen and would consider them as good options.

Robson said: "Whoever goes in there they will have their opinions and ideas, but because of the success United have had over the last 20 years, you can't go in and rip everything apart and try to rebuild the way you think it should be.

"How can you do that after so much success?

"Why not Mike Phelan and Rene take over from Sir Alex Ferguson when he does decide to pack in.

"That never gets mentioned but they know how it works. It has always has to be someone who is really well known with a track record."