Sweden striker Isak established himself as one of the Premier League’s leading attackers during his three seasons with Newcastle.
Having arrived from Real Sociedad in the summer of 2022, he scored 62 goals in 109 appearances for the St. James’ Park club.
Isak netted 54 times in 86 Premier League outings for the Magpies, with 23 of those goals coming last season, when he finished second behind Mohamed Salah in the race for the Golden Boot.
He is now a teammate of Salah and has set his sights on winning trophies at Anfield.
Isak added: “I think I have a lot to give, I think I have a lot to improve. I’m a striker but I always want to give as much as possible to the team, mainly goals but much more than that as well.
“I want to win everything. Yeah, [as simple as that].”