Chelsea striker Nicolas Jackson could face a Premier League suspension over allegations he slapped Nottingham Forest defender Morato.
The Blues signed off for the October international break with a 1-1 draw against Nottingham Forest as Enzo Maresca admitted his frustration at full time.
The hosts were unable to find a winner inside 13 minutes of added time, with a player advantage, following James Ward-Prowse's red card.
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However, as tempers flared in the final seconds, Chelsea's record for ill discipline came to the fore again, with four players cautioned after the 90-minute mark.
Jackson was substituted by Maresca on 81 minutes, but he was involved in ugly scenes in the final seconds, between both sets of players.
The melee was sparked by Forest defender Neco Williams appearing to push Chelsea rival Marc Cucurella into Maresca with the Blues boss ending up on the floor.
As both benches emptied to join the row, Jackson appeared to raise his hands into Morato's face, but VAR cleared him of wrongdoing at the time.
However, as per reports from The Independent, the matter may not be closed for the Senegal international if the FA look to take retrospective action against him.
Chelsea will be fined for the second time this season, as per Premier League rules on receiving six yellow cards in a game, with a decision on Jackson expected imminently.