Real Sociedad have paid tribute to Alexander Isak after the striker officially joined Newcastle United on Friday. The Spanish side sent their immediate well wishes as the 22-year-old was unveiled at St. James' Park after days of speculation.
Isak arrives at Newcastle as the club's record signing after joining in a deal worth £58m. The Swedish forward has signed a long-term deal on Tyneside and may be available for Sunday's trip to Wolves.
The deal includes add-ons, with Real Sociedad receiving additional funds should Isak hit certain appearance and goal milestones. Newcastle have also included a sell-on fee, ensuring their Spanish counterparts will receive a percentage of any future sale.