Burn stated that the team can only control what they can in this situation. The North East side wants to retain Isak's services, but it seems likely that they will have to sell him if he is determined to leave. If that happens, Newcastle may look to sign RB Leipzig's Benjamin Sesko, who is also wanted by other top clubs.
Isak's decision to train alone and not travel with the team for preseason suggests that he is serious about leaving. His move to Liverpool appears to be imminent, and it is unlikely that he will be part of the team next season.