Former Newcastle manager Rafa Benitez spoke to TNT Sport about the player's move to Liverpool.
Benitez revealed that when he spoke to people close to the club, they mentioned that they missed Isak.
Isak left Newcastle for Liverpool in a £125m transfer deal, which was a contentious split.
Benitez praised Isak's adaptability and skills, saying he was able to adjust to the team's style of play and make smart movements on the field.
He also noted that Isak can play in multiple positions and has the ability to dribble and run deep into the opponent's half.
Benitez believes the signing of Isak will be a great acquisition for Liverpool and a significant loss for Newcastle.