Erik ten Hag and Anthony Martial were seen arguing with each other during Manchester United's game against Newcastle on Saturday night.
Ten Hag was furious with the striker for failing to track back as a Newcastle almost resulted in a goal for Miguel Almiron.
He remonstrated with the 27-year-old, having clearly been incensed at his perceived lack of effort.
Martial seemed to not take the criticism lying down, though, and was seen waving his arms in frustration at his manager.
His evening did not get any better after that as he was hauled off in the 61st minute, with Erik ten Hag making a double change after his side fell behind to an Anthony Gordon tap-in.