West Bromwich Albion forward Salomon Rondon will escape any sanction for striking Marcos Rojo during the 2-0 defeat by Manchester United last weekend.
Venezuelan forward Rondon tussled with Rojo by the touchline and as the defender returned to position.
The striker appeared to push and slap the defender across the face, leading to a brief melee between the two sets of players.
The match official Anthony Taylor booked both players following the confrontation but confirmed to the FA on Monday that he had not seen the slap by Rondon at the time.