Roy Keane was left furious after watching Manchester United's back four warm up by defending uncontested long balls before the derby against Manchester City.
Keane's reaction to the warm-up
Keane, known for his outspoken nature, was particularly upset with how Manchester United warmed up for the match. He watched as the defensive unit went through the routine ahead of the clash at the Etihad.
United's defensive lineup
Michael Carrick chose to deploy Diogo Dalot, Harry Maguire, Lisandro Martinez and Patrick Dorgu in his back line against City.
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