Liverpool forward Mohamed Salah said if he speaks "there will be fire" after he argued with manager Jurgen Klopp on the touchline during the 2-2 Premier League draw at West Ham.
Salah seemed to clash with Klopp as he prepared to come on as a 79th-minute substitute.
Klopp said he would not disclose what the argument was about, but former Liverpool striker Peter Crouch said on TNT Sports that "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.