Manchester United legend Roy Keane has criticised Ralf Rangnick's decision to bring Juan Mata off the bench instead of giving a youngster a chance against Chelsea.
The Red Devils played out a 1-1 draw with Thomas Tuchel's side at Old Trafford in a game which saw several academy stars on the bench due to United's injury concerns.
Alejandro Garnacho got his chance off the bench, but Juan Mata and Phil Jones were brought on over Hannibal Mejbri, Shola Shoretire and Alvaro Fernandez.
Keane was particularly unimpressed at the decision to bring on Mata, but also had pops at Nemanja Matic who started the game, and Jones following the game.