Those big clubs already have strikers except Liverpool. I don't count Nunez because of his terrible performance. Only happy with how Napoli is seriously approaching him at this moment. So Liverpool can sell him to the Napoli, then use his money to fund Isaak's transfer. The possibility is still there.
Liverpool is having one of the best attack in last season, but they are doing some changes which are surely going to be had good impact with Nuñez is leaving because he fails to give his best while Isak is now under talk but as things are going currently nothing is clear what is going to happen.
Many big clubs are chasing but most chances Newcastle United which is having spot into Champions League fights hard for having him into their squad this situation is going to be interesting because Liverpool already signed few big players which are giving them good strength. After Club World Cup things could be much clearer about few players because Nuñez is surely going to Italy while Isak entry into Liverpool make them clearly at the top again with no team could be going to challenge them for their second title.