Former Nigeria international Anthony Ujah has joined Union Berlin, who have won promotion to the Bundesliga, from Mainz 05 for a transfer fee of two million Euros.
The 28-year-old Ujah scored four goals in 22 appearances for Mainz last season.
It was his second spell at Mainz.
His previous clubs included Werder Bremen and FC Cologne and he has also played in Norway and China.
Ujah is a direct-playing centre-forward with power and speed.
He has joined up with compatriot Suleiman Abdullahi ‘Daddy’, who has also joined Union Berlin on a permanent basis after he played on loan at the club last season.