“I think he played well, he returned to the bench, he’s OK,” Erik ten Hag said.
“I think he just shot into the dressing room, I don’t know what you want to make from it.”
Anthony Martial stormed down the tunnel after being replaced in Manchester United’s win over Bournemouth.
Having taken the lead in the first-half through Casemiro’s superb acrobatic effort, United were pushing for a second goal to put the game to bed.
Ten Hag however opted to take off Martial on the hour mark, with Wout Weghorst onto replace him.
The Frenchman was left with a bemused look on his face as his number came up, slowly leaving the pitch and heading straight down the tunnel.
United are now on the brink of securing a top four finish ahead of arch-rivals Liverpool.
Jurgen Klopp’s side secured a late draw against Aston Villa at the same time on Saturday afternoon, keeping the top four race alive but United now just need a single point from their final two games to confirm their place in next season’s Champions League.
United host Chelsea on Thursday before Fulham come to Old Trafford for the final game of the season next Sunday.
