Jack Grealish was livid after Moises Caicedo avoided a red card for following through in a nasty challenge.
The Manchester City winger had to be replaced by Jeremy Doku 66 minutes into their FA Cup semi-final against Chelsea.
Grealish was fuming with officials and ranted as he took his place on the bench, with his withdrawal sparking fresh concerns after an injury-hit season.
He has already missed parts of the season with injury troubles but has returned refreshed since the international break and will want to avoid another spell on the sidelines.
Caicedo was already on a yellow card and was fortunate to avoid being sent off - and Grealish made his opinion clear to fourth official Darren England.
More to follow.
Jack Grealish was fuming after Moises Caicedo went unpunished after this awful challenge