Liverpool forward Mohamed Salah has said that if he speaks "there will be fire" after the Egyptian forward argued with manager Jurgen Klopp on the sidelines during the Reds' 2-2 Premier League draw at West Ham.
Salah appeared to clash with his manager in the 79th-minute when he was about to be introduced as a substitute.
Klopp later stated he would not comment on the origins and nature of the disagreement, but commentating for TNT Sports, former Liverpool striker Peter Crouch said "it doesn't look good for the club".
"Salah is a player who has started the majority of games for Liverpool and he will be fuming to be on the bench," Crouch said.
"But no-one likes to see this between a manager and a key player."
Salah's frustrations spilled over on the touchline and seemed to be triggered by something Klopp said to him - the prolific Liverpool forward subsequently being shepherded away by his team-mates Darwin Nunez and Joe Gomez.
The draw almost certainly ended Liverpool's title challenge - the Reds now needing Arsenal and Manchester City to drop points if they are to have a glimmer of hope.
A post-match social media video showed Salah walking through the media zone and saying: "If I speak there will be fire."
A reporter asked "Fire?" and Salah replied: "Yes, of course."
Klopp said later: "We spoke about that in the dressing room and it's done for me."