Ahead of his debut season at Manchester United, Jose Mourinho is set to work with only 24 players in the first team, according to a report on the Daily Mail.
The Portuguese is also said to be willing to allow anyone outside the group to either leave the club or train with the U21s.
As a result, several first team players from the last two seasons could either be forced to train with the U21s, or leave the club and it is believed that the duo of Guillermo Varela and Tyler Blackett could be the first casualties, as they have already been asked to train with the reserves.
Varela has featured in 11 first team games for the Red Devils, while Blackett has featured in 12, and spent the last season on loan at Scottish champions, Celtic.
United are yet to have the bulk of their first team squad, as most of them are still on holidays after featuring at the Euros and Copa America.
Mourinho has apparently explained to the players he prefers to work with a small group of 24 first team players, and those who fail to make this group will have to decide if they want to leave the club either on loan or permanently, or if they want to stay at the club and train with the reserves.
The likes of David De Gea, Wayne Rooney, Morgan Schneiderlin, Chris Smalling, Bastian Schweinsteiger, Anthony Martial, Marcus Rashford, Matteo Darmian and Marouane Fellaini are yet to join for pre-season, as they are still on holidays following their participation at the Euros.
Mourinho’s first game in charge will be against Wigan Athletic this Saturday, and the players available will hope to use the chance to prove themselves to the former Real Madrid boss.