The Welsh veteran notched up his 25th major trophy with United on Monday night as they took out the 2012/13 Premier League title and he praised the Scottish tactician for the absolutely brilliant work he has done throughout his playing days.
"His appetite is second to none. Every day at the training ground he's the first there, his enthusiasm is brilliant and that feeds through the club, he is the club," he told Sky Sports.
"Everything comes from the manager, getting players in, getting the right staff in, and he's just an unbelievable manager and an unbelievable person and he deserves everything that he gets.
"He works hard and I've been very lucky to play under him for so long."