Pablo Zabaleta not surprised Marouane Fellaini headbutted Sergio Aguero

Pablo Zabaleta admits Marouane Fellaini's headbutt on Sergio Aguero is not surprising coming from the Belgian.

Fellaini was sent-off late in the goalless Manchester derby live on Sky Sports on Thursday after a fierce reaction on Aguero just seconds after being booked.

United boss Jose Mourinho said Aguero was "a smart, experienced Argentinian player" to go to ground after the incident and Zabaleta believes Mourinho's comments "marred" the game.

The full-back told Sky Sports: "Sometimes those things make the difference. It was a bit strange how Fellaini reacted on Aguero after being booked 20 seconds before.

"But I think coming from Fellaini it is something you're not really surprised (by).

"Sometimes you have to give calm in those moments but at the end of the day I think it was marred by Mourinho saying the Argentinian player (gave a reaction)."