Chelsea forward Nicholas Jackson was still fuming over not being able to take a penalty after their 6-0 win over Everton.
The striker felt that he should have been given a chance to get on the scoresheet in the game.
However, Cole Palmer stated he was the penalty taker and scored for his fourth of the night.
The Sun posted a video that showed Jackson and teammate Moises Caicedo arguing after the final whistle.
As they headed into the tunnel, the two players were having an animated discussion.
Manager Mauricio Pochettino said such incidents would not be tolerated in the future.