Newcastle midfielder Joey Barton will not face action over his clash with Sunderland's Dickson Etuhu in Saturday's 1-1 draw.
Barton went in with his studs high and the pair clashed afterwards but no foul was awarded by referee Martin Atkinson.
"Whilst it is clear the officials did not see the full extent of the incident they did see players coming together," said an FA spokesman.
"To take any further action would be tantamount to re-refereeing the game."