A furious Jurgen Klopp confronted referee Michael Oliver after his side were denied a last minute penalty against Man City on Sunday.
The thrilling match was level at 1-1 when Doku clashed with Alexis Mac Allister in the area as he went to clear the ball deep into added time.
The winger got some of the ball but his boot was very high and made contact with the Argentinian, who went down in a heap..
Oliver waved play on and the VAR somewhat controversially stayed with his decision, believing it wasn't a clear and obvious error.