Manchester City striker Sergio Aguero escaped punishment after grabbing assistant referee Sian Massey-Ellis during their 1-0 win over Arsenal.
The Argentine forward was disputing a throw-in decision which went against him during the game.
He spoke to Massey-Ellis as she pointed her flag in favour of Arsenal, before briefly grabbing her shoulder as she walked up the touchline.
Replays showed the ball coming off Aguero and some believe he was fortunate not to receive a red card for the incident.
New rules were introduced in 2016 in order to protect referee's which stated that players could receive yellow or red cards for touching any of the officials.