Former Aston Villa striker Tony Cascarino believes Roberto Firmino is becoming a "problem" for Liverpool.
The Brazilian has endured a torrid time in front of goal, managing to score just once in his last 20 Premier League matches for the defending champions.
Writing in his column for The Times, he said: "It is only one goal in 20 Premier League matches now for Roberto Firmino as the Liverpool forward continues to struggle in front of goal.
"There was nothing particularly wrong with his all-round game against Everton — he linked the play well and was involved in the move for Liverpool's opener — but his lack of productivity in front of goal is placing a huge burden on Mohamed Salah and Sadio Mane.
"Should this goal drought continue, Firmino cannot afford the creative side of his game to slip."
