Liverpool have made their first formal move for Newcastle United striker Alexander Isak, with a British-record bid that could surpass £125 million, Mail Sport reported Tuesday. The Premier League champions are determined to sign a new centre-forward and are now officially testing Newcastle’s long-standing stance that the Sweden international is not for sale.

One of the biggest transfer dominoes of the summer has fallen, with Liverpool reportedly making an approach to Newcastle United for superstar striker Alexander Isak.

Newcastle are unhappy with Liverpool for trying to ‘unsettle’ Alexander Isak, as the defending Premier League champions look to sign the striker ahead of the new season.

SPORT.com has all the latest news, updates, views and reaction from around the footballing world. Liverpool have told Newcastle they would be open to signing Alexander Isak IF the Magpies

Liverpool have made an approach to sign Alexander Isak from Newcastle United. The Merseyside club say no formal offer has been submitted as they are well aware Newcastle’s stance has always been that Isak is not for sale. However, they have communicated their interest to do a deal in the region of £120million.

The Red Devils have been locked in negotiations with their Premier League counterparts for several weeks over a deal for the Cameroon international. According to the latest update from MEN's Samuel Luckhurst, United are still working on a deal and hope Mbeumo can be involved in their pre-season tour of the United States.