Alexander Isak (; born 21 September 1999) is a Swedish professional footballer who plays as a forward for Premier League club Newcastle United and the Sweden national team. Starting off his professional career with AIK in 2016, Isak represented Borussia Dortmund and Willem II before signing with Real Sociedad in 2019. A full Swedish international since 2017, he has won more than 30 caps for his country, and represented the side at UEFA Euro 2020. He is the youngest ever goalscorer for both AIK and the Sweden national team. Club career Early life Isak was born and raised in Solna Municipality, in central Stockholm County, by Eritrean parents. He started playing for the youth team of one of the largest clubs in the area, the Allsvenskan team he supports, AIK, at age six. Breakthrough at AIK Isak made his first-team debut for AIK on 28 February 2016, appearing as a substitute in the 75th minute of the Swedish Cup away match against fourth-tier side Tenhults IF. At age 16, Isak scored a goal in the 6–0 victory. On 7 April 2016, AIK head coach Andreas Alm included Isak in the starting lineup on matchday 2 of the Allsvenskan in an away fixture against Östersunds FK, alongside fellow young striker Carlos Strandberg. He secured the victory for his side, scoring the second goal in a 2–0 win, thus becoming the youngest scorer for AIK in Allsvenskan history at the age of 16 years and 199 days. On 25 April, Isak scored his first goal at AIK's home ground, Friends Arena, opening the score in a 2–1 victory against IF Elfsborg. On 3 May 2016, Isak signed his first professional contract through the end of the 2018 season, having impressed in his first few games, and establishing himself as a first-team regular. Between matchdays 8 and 9, head coach Alm was sacked, but Isak was confirmed in the lineup by new manager Rikard Norling. On 21 September 2016, Isak's 17th birthday, he scored two critical goals in AIK's 3–0 derby win over arch-rivals Djurgårdens IF. He was later described by teammate Chinedu Obasi as "Sweden's new Zlatan Ibrahimović". Borussia Dortmund On 23 January 2017, Isak signed for Bundesliga club Borussia Dortmund on a long-term contract, lasting until the summer of 2022. The transfer fee was undisclosed, but reports suggested that it was set at €9 million, which would be the highest transfer