He had his studs up in a challenge with Nathaniel Clyne and clipped the Palace defender's shin with minimal contact.

they have "notified the Football Association" of their decision to appeal.

Referee Chris Kavanagh originally took no action but reviewed the incident on the monitor following an intervention from video assistant referee (VAR) Michael Salisbury before showing Calvert-Lewin the red card in the 79th minute.

"I have no clue what that [monitor] is there for," said Everton manager Sean Dyche following the game.

"Every fan must be going 'what is the point?' We all know the outcome, they are going to agree with everything they're being told.

"The chance of having something turned over is miniscule so why even bother?

"I'm a fan [of VAR] but we're all aware it needs tidying up. I thought it was getting tidied up but it seems to have stepped back a little bit. I remain a fan, but it is beginning to test my patience."