Nouveau-riche Newcastle United have ignited their previously tranquil summer transfer window with the blockbuster signing of Swedish striker Alexander Isak.

The 22-year-old cost an initial €65 million to buy from Real Sociedad, with an extra €5 million potentially being paid to the Spanish club in add-ons, according to The Guardian's Fabrizio Romano. There's also a sell-on clause included in the paperwork.