"He comes from another league, a completely different system which Monaco played, and we have a good team together so that takes time".
Juergen Klopp's side have five wins out of five but none were quite as significant as Saturday's 2-1 victory over Tottenham Hotspur at Wembley - a statement win that suggests Liverpool could push Manchester City all the way in the title race.
Liverpool v PSG in the Champions League is tomorrow, can Salah, Mane and Firmino overcome Neymar, Mbappe and Cavani? Liverpool, the unluckiest team in the league last season in ESPN's Luck Index , escaped but a draw would have been harsh as they dominated and looked more unsafe from the outset.
Spurs are looking to bounce back from a surprise defeat against Watford last time out whilst Liverpool are hoping to maintain their 100% start to the Premier League season.
Liverpool earned all three points away to Tottenham on Saturday, and the north Londoners have admitted the win was never in doubt.
"I noticed Graeme Souness said afterwards he thought it was my old club's best team since Kenny Dalglish last won the league".
Jurgen Klopp focused on tough roads ahead
"I'm not going to start condemning the forwards after such a good win", he told the Mirror.
"The issue will be monitored and treated by Liverpool's medical staff at Melwood before any decision is made on whether Firmino will be able to figure in Tuesday evening's Champions League encounter with Paris Saint-Germain at Anfield".
Vorm failed to control the rebound after Mane's cross from the right was turned onto the post by Jan Vertonghen, and Firmino collected himself to poke it over the goal line for his second league goal of the season and second in as many games. "The front three are a real problem and a handful, so I think Liverpool will challenge Man City".
Liverpool beat the Premier League champions home and away at the quarter-final stage.
"Maybe I repeat again but after Manchester United, all the signals from the team were that we were going to crash". How do you prepare for a game when you don't focus on it?
"I think you should go for all competitions", he said.