Everton captain Seamus Coleman verbally clashed with Kieran Gibbs in the aftermath of the West Brom fullback's dismissal on Saturday.
Gibbs was given his marching orders for lashing out at James Rodriguez.
The Colombian bumped into his opponent in first-half stoppage time of the weekend's goalfest, with Everton 2-1 up at the time thanks to a James strike.
In retaliation, Gibbs connected with Rodriguez's face and was promptly dismissed.
With no fans in the ground, pitchside microphones were able to pick up Coleman's sharp reprisal of his opposite number.
As he exits the pitch, Gibbs, 30, can be heard saying: "F*** him, I'll do it again."
That sparks a furious reaction from Toffees star Coleman.
The 31-year-old interjects: "No you won't do it again.
"Who you talking to, you'll do it again? Hard man. F***ing hard man."