Chelsea have held talks with Newcastle United for Alexander Isak but are aware that it would take a club-record fee to snare him away from the Magpies this summer, according to the Daily Mail.
Newcastle have been reluctant to discuss the possibility of selling Isak, who scored 21 times in 30 Premier League appearances last season.
The club are focused on bringing in a forward to support the Swede but Newcastle are now facing the threat of losing Isak to one of the bigwigs of the Premier League.