Sadio Mane fired an ominous warning to Liverpool’s rivals as he insisted the Reds can still improve after warming up for Tuesday’s Champions League clash with Atletico Madrid by thrashing Watford. 

Jurgen Klopp’s side powered to a 5-0 victory at Vicarage Road on Saturday to keep their Premier League title challenge on track. Roberto Firmino, Mohamed Salah and Mane were unstoppable when Liverpool marched to their first Premier League title in 30 years during the 2019-20 season.