Back in the winter transfer period, Choupo-Moting, 22, wanted to depart from Hamburg before a faulty fax machine prevented the transfer in time.

The 22-year-old youngster forward and Cameroonian international made 23 official matches and three goals at his last club Hamburg.

"Eric Maxim is a player with an exceptional potential(潜能). He combines many features that distinguish a very good offensive player. He is technically adept, strong, and has a great finish," Mainz coach Thomas Tuchel said.

Mainz astonished the whole German Bundesliga with a stunning 5th position last season.

"I am definitely convinced that I made the right decision. The sportive perspective of the team is great. I have been watching the development of Mainz very closely," Choupo-Moting said.(本文由在线英语听力室整理编辑)