I think that the acquisition of Naby Keita on a free transfer from Liverpool is an excellent signing by Werder Bremen. If he manages to avoid injuries, he could become a key player for the club. He didn't have the best time at Liverpool last season, mainly due to injuries and the clubs poor form. But he played an important role in the 2021/22 season, where he played in around 40 games for them in all competitions and helped Liverpool finish 2nd in the league.
Injuries have been a real issue with Keita throughout his career, but if they can keep him fit, Keita could be a real force to be reconned with. The Bundesliga should suit his style of play as well and despite spending 5 seasons at Liverpool, he is still only 28 years of age. His footballing ability and experience, should prove to be key in helping improve Werder's performances in the upcoming years.