With Louis van Gaal splashing out around £150m on new talent this summer, some players naturally had to leave the club too.
As Marcos Rojo, Luke Shaw, Daley Blind, Ander Herrera, Angel Di Maria and Radamel Falcao arrived, van Gaal allowed the likes of Patrice Evra, Bebe, Shinji Kagawa, Wilfried Zaha and Javier Hernandez to depart Old Trafford.
Another player to leave the club was Nani. The Portuguese winger arrived at United from Sporting Lisbon in 2007, with many hoping the £20m signing would emulate compatriot Cristiano Ronaldo at Old Trafford.
That didn't happen though, and his performances seemed to get progressively worse as his time at the club went on, before van Gaal let him leave this summer.
As part of the £16m deal to land Argentine defender Rojo, the Red Devils sent Nani to Sporting Lisbon in part-exchange, handing him a return to his former club.
So far, Nani has enjoyed something of a renaissance back in Portugal, scoring five goals in just 12 games, leading to some fans wondering whether he could actually make a return to United next summer.
However, the player himself says that returning to Old Trafford isn't in his thoughts.
"To be honest, I am not thinking about it. It has not crossed my mind," said Nani. "I am happy that I am around people who like me, feel the warmth of those who believe in me and in my abilities."