Carrick committed his future to Man United until 2017, bringing to an end speculation over his future as he was previously out of contract.
Mourinho praised Carrick and insisted he is looking forward to working with the 34-year-old at Old Trafford next season.
“Michael is a very intelligent midfielder and a great reader of the game,” Mourinho said.
“I am pleased that he will be extending his contract. His form this year shows his ability and his enjoyment of the game are as strong as ever. Michael has a wealth of experience from his many years at the club and that knowledge will be invaluable to me. I am really looking forward to working with him.”
Carrick is certainly entering the twilight of his career, and he may need to pick and choose his moments to play next term, but there is no doubt that keeping him at the club is the correct decision.
The Englishman is a popular figure in the dressing room at United and characters such as him will be needed as Mourinho looks to oversee a transition at Old Trafford.
Carrick also showed during the 2015/16 season that he still has a lot to offer on the pitch. He was often United’s most consistent midfielder over the course of the campaign despite the acquisitions of Morgan Schneiderlin and Bastian Schweinsteiger.