Chelsea vs PSG - watch: Diego Costa lucky to stay on the pitch after pushing Marquinhos over as soon as the referee turned his back

Incident happened while Costa was already on a yellow card

Diego Costa pushes Marquinhos (SKY SPORTS)

He's behind you!

Diego Costa played up to his pantomime villain reputation tonight in Chelsea's Champions League tie against PSG by pushing Marquinhos to the ground with force, just when referee Bjorn Kuipers had his back turned.

Costa, of course, was already on a yellow card at the time of the incident, and can consider himself lucky to stay on the pitch.

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WATCH: COSTA PUSHES MARQUINHOS

Gary Cahill opened the scoring in the 81t minute, before David Luiz equalised five minutes later against his former team. Eden Hazard then scored Chelsea's second, ruling out the possibility of penalties, with a 96th-minute goal from the spot.

Seven minutes from time, Thiago Silva scored PSG's second to with a fine header to make it 2-2, with a crucial second away goal for the French side.