Tottenham have completed a deal for Cologne defender Kevin Wimmer and he will join them in June, Sky sources understand.
Wolfsburg finished as runners-up to Bayern Munich as they wrapped up their campaign with a 2-2 draw at Cologne.
Mainz ensured their place in the Bundesliga next term with a 2-0 win over Cologne, who guaranteed their safety a week ago.
Cologne secured their top-flight status for next season with a 2-0 victory over Schalke.
Bas Dost scored twice as Wolfsburg secured a Champions League spot, while Cologne guaranteed survival.
Werder Bremen have announced the signing of striker Anthony Ujah from Cologne.