Erik ten Hag has a history of coming down hard on a player who refuses to come on as a substitute.
As confirmed in an official statement from the club, the Dutchman has banished Cristiano Ronaldo from the Manchester United first-team after his behaviour on Wednesday night.
Ronaldo was on the bench for the 2-0 win over Spurs but overshadowed the victory when he was seen walking down the tunnel prior to the final whistle.
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It then emerged he had left the stadium completely as opposed to heading to the dressing room - something he did in a pre-season friendly against Rayo Vallecano in July.
Ten Hag said he would "deal with" in his post-match interview but it was then reported that Ronaldo actually refused to enter the fray.
As a result, he will not be part of the first-team for the trip to Chelsea this weekend and is expected to train with the club's Under 21's side.
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But it could get much worse for Ronaldo if Ten Hag adopts an approach took in the past. In the 2017/18 season, Amin Younes refused to come on for Ajax against Heerenveen.
The fixture was a 4-1 win for Ajax at the Johan Cruyff Arena but Younes, formerly of Borussia Monchengladbach, did not want to come on for the last few minutes.
A furious Ten Hag made the call to exile Younes from the first-team and he was sent to Jong Ajax, the Amsterdam club's second team.
“We still have six games to play and I only want players who are 100% motivated," Ten Hag said, as per Football Oranje.
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"A lot has happened with and around Amin during this season, that will undoubtedly play a role.
"But he does not give us the feeling that his attention is completely with Ajax. Marc and I informed him today that he is training the remaining weeks of this season with Jong Ajax.”
Younes did not play again for Ajax and he already had a deal signed to join Napoli, where he played 27 times across two seasons.
The 29-year-old then spent two years on loan at Eintracht Frankfurt before joining Saudi Arabian side Al-Ettifaq.
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He's now back in the Netherlands having been loaned out to Utrecht.
Ronaldo, meanwhile, issued a statement on the situation on Thursday night but one that did not include an apology.
"Right now, I just feel that I have to keep working hard in Carrington, support my teammates and be ready for everything in any given game," Ronaldo wrote on his social media channels.
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"Giving in to the pressure is not an option. It never was."
Having wanted out in the summer, it would be a huge surprise to see him remain at United beyond the January transfer window.
Topics: Ajax, Erik Ten Hag, Manchester United, Cristiano Ronaldo