It's very interesting to see Isaak has declared his interest to play for Liverpool. I think he will fit to the club, and it's good for Liverpool to sell Nunez, then add more money to sign him from Newcastle.
It will better if he can forces his club to decrease his release clause, then he can move to the Liverpool asap.
Liverpool combined with him is gonna be a great combination. I hope that is gonna happen soon.
Since Isak is great striker and surely goalscorer, I think this transfer would be a great decision by Liverpool. His market value is estimated to be around 75 million euro and he is 25 years old, but as was mentioned before here, is contract goes until 2028, which is definitely a huge hurdle that Liverpool must overcome by paying additional value. I don't think Newcastle would ever let him go for his estimated current value and Newcastle doesn't have to do it as they are not poor or anything like that. They have got the resources to keep their top players and to compete with clubs like Liverpool when it is about the salaries.
Isak probably wants to leave, but I don't know what will come to his mind. Some players try to protest their ways to other clubs by not attending training and so on, but I doubt that this would get him any closer to his goal to leave Newcastle and join Liverpool. The only way out for him would be Liverpool paying 100 million euros and more.