Nottingham Forest defender Felipe escaped punishment after appearing to grab Bruno Fernandes by the throat during his side's feisty FA Cup clash with Manchester United on Wednesday evening.
The altercation took place towards the tail end of stoppage time, and after Casemiro's last-gasp winner in the 89th minute which booked the travellers a spot in the quarter-finals - where they will meet Premier League rivals Liverpool in a tricky test.
Footage of the incident shows the pair squaring up to one another before Felipe reaches for the United's throat, pushing him backwards towards the corner flag before Fernandes is able to knock his hand away.