The Belgian was not happy when the Manchester City went down under his challenge.
Marouane Fellaini was clearly unimpressed after he clipped the ankle of Sergio Aguero during the first half of the Manchester derby at the Etihad Stadium.
The Manchester United midfielder could be seen returning to the scene of the crime - despite the fact that referee Michael Oliver did not award a penalty - to give Aguero a piece of his mind.
Looking at this Vine, though, it seems that Fellaini may have spat at the Argentine.
