Liverpool manager Juergen Klopp said he waits to celebrate goals on the touchline because of the Video Assistant Referee (VAR) after Sadio Mane's effort was ruled out for offside in Saturday's 2-0 Premier League win over Watford.
Mane thought he had put Liverpool ahead 2-0 with a glancing header after Mohamed Salah had scored the opener, but the goal was ruled out as the VAR deemed that the Senegal international forward was marginally offside.