According to sources, Jaissle has never managed in the Premier League before, and his first career as a player was ended by a serious knee injury at the age of 25. His former team-mate Chinedu Obasi described him as "very hungry" and having a leadership style that is often vocal and passionate. Newcastle United finished in 12th place in the Premier League last season, with a poor away record and seven top-flight defeats on home soil. The club won the EFL Cup in 2025 under predecessor Eddie Howe, and Jaissle will be hoping to replicate that success. Newcastle United will play Liverpool on Tyneside on 23 August in their season opener.