Man Utd had so many Mason type players during their heyday and don't seem to have any now they are shit.
Wes Brown , Oshea, Butt, Fletcher , Phil Neville , Ronnie Johnson , Henning Berg , Ben Foster , Johnny Evans , Alan Smith , , Tim Howard and probably a few more who haven't popped into my head
Solid dependable squad players who know what it means to wear the shirt and give 100% every time they get the privilege to do so , never causing unrest in the squad or making noises in the press , reliable efficient yet unspectacular work horses who really help galvanise squads.
Anyone who wants rid of Mason or Carroll for that matter ought to replicate educate themselves IMO , maybe in Lala land where some of these people seem to live you have a Steven Gerrard on the shelf ready for a rainy day when Zinedine Zidane isn't cutting the mustard but in the real world Ryan Mason will do just fine thanks