Hammers boss David Moyes insists James Tarkowski's challenge was a red card offence
"It is a red card," he demanded. "It is not going to change anything, it might have done during the game but you have to say it is really disappointing that the referee didn't see it is a red.
"The linesman is very close to it and then we also have the chance to go to VAR and make a decision so who knows what answer I am going to get this time if we ask for clarity on it.
"For me it has gone but I think it is right that it is brought up and asked why it was not given."
The controversy follows a couple of talking points from Arsenal's stalemate against Leicester City just 24 hours earlier.
Eddie Nketiah was dismissed for a mistimed challenge on James Justin while Jamie Vardy avoided punishment when swinging a boot towards the face of Gunners defender Shkodran Mustafi.
Speaking about the incident, Burnley boss Sean dyche said: "I presume that is what VAR is there for. Did they react their players? I can't remember. I have not seen it back."