That's the view of Tony Cascarino who has seen the Firmino struggle at this time of year.
The Brazilian shone for Liverpool last campaign, alongside Sadio Mane and Mohamed Salah.
Firmino netted 15 Premier League goals last season but has just two to date this term.
Liverpool are unbeaten domestically though have tasted defeat in Europe, with Napoli beating the Reds.
Jurgen Klopp's side return to Champions League action by traveling to Red Star Belgrade tomorrow (5.55pm).
And Cascino would not be shocked to see Firmino left out for the clash in Serbia.
Jürgen Klopp left him alone in the next few games, "Cascarino wrote in his column for The Times." Roberto Firmino looks to me like he needs a rest.
Red Star Belgrade – and not managed a single assist.
He's played in 69 games since the start of last season, more than any other player in the Premier League. Even Mo Salah has played two fewer.
"He would benefit from a break to freshen him up.
"Firmino is one of those.
"Daniel Sturridge, Xherdan Shaqiri and Adam Lallana are all in the company at the moment and have made Firmino less comfortable."
Despite being unbeaten in the league, Liverpool have failed to match the scintillating form from last season.
But it's the reds' defending that has irritated Klopp the most.
Following a 1-1 draw with Arsenal at the weekend, the English said: "I'm not happy with how we defended in the first half, that's not what I want.
"We were outstanding on the counter attack.
"It's a point, we take that, and a point at Arsenal is always a good result but we could have won.
"We had clear chances, they had chances as well."