João Klauss de Mello came to TSG Hoffenheim from Brazil at the age of 19. The striker initially got some minutes under his belt with the U23s, before joining Finnish top-flight outfit HJK Helsinki on loan in 2018. Klauss finished his first season in the Finnish league as top-scorer, having found the net 21 times. He subsequently moved on loan again – this time to LASK in the Austrian Bundesliga, where he scored 24 goals in 61 competitive appearances. Klauss returned to TSG at the end of July 2020.