The 25-year-old will have a medical in Hamburg on Wednesday, but the striker is a proven goal-scorer having netted 13 goals for Mainz in 15 games after switching from Werder Bremen midway through the season.

Having won seven caps for his country, Zidan has already met with Hamburg's Dutch coach Huub Stevens, who was interested in signing the Egyptian during the Bundesliga's winter break, but Mainz got him first.

Zidan is the second high-profile Mainz player to quit the relegated side in two days after German international defender Manuel Friedrich signed a three-year deal to switch to Bayern Leverkusen on Tuesday.