The Holland international departs Goodison Park, just a year after arriving, following a disappointing 12 months across which he struggled to make an impact.
He joined the Toffees in a £23.6million deal from Ajax but struggled to break into the side, almost leaving on loan to Napoli in January only for the move to collapse at the last minute, but has now signed for Bremen for a reported £12million.
Klaassen made only 16 appearances for Everton, with just three Premier League starts to his name.
DONE DEAL 🤝 @DavyKlaassen has signed for #Werder from @Everton ✍️ pic.twitter.com/p6NuND9w4I
— SV Werder Bremen EN (@werderbremen_en) July 27, 2018