Heung-min Son appeared to make an X-rated remark after being substituted against Aston Villa.
The Tottenham captain was visibly frustrated with manager Ange Postecoglou’s decision to take him off.
Richarlison replaced Son as part of a double substitution in the 56th minute.
Meanwhile, Yves Bissouma also came on for Rodrigo Bentancur in midfield for the hosts.
However, the Spurs skipper, who returned to action from injury on Sunday, was far from impressed as he took his seat on the bench.
Cameras caught him appear to say the words ‘f****** s***’ as he sat on the bench alongside teammates.
He was taken off with the scores locked at 1-1, Brennan Johnson’s goal early in the second half cancelling out Morgan Rogers’ first-half strike.
Son had played a key role in Spurs’ equaliser, setting up Johnson just minutes before he was taken off.
The winger’s dangerous low cross to the back post was converted by the Welsh international to level the score.
It is Son’s third assist of the season and his sixth goal involvement overall.
He has struggled for fitness in recent weeks, missing three of Spurs’ previous four matches before the visit of Villa.
After a string of hamstring and thigh issues, though, the 32-year-old returned to the starting line-up on Sunday.
Postecoglou’s decision to withdraw Son appeared to pay off during the final 20 minutes, however.
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His side completed their turnaround in the 75th minute as Dominic Solanke beat the offside trap before dinking the ball over Emiliano Martinez.
Meanwhile, Son’s replacement Richarlison teed up Solanke for another goal moments later as Spurs extended their lead.