Left back Aaron Martin has joined Mainz from RCD Espanyol on loan, both football clubs said on Tuesday. With the transfer, Mainz bolster their defence for the upcoming season as Espanyol's Aaron Martin has agreed to a season long loan deal until June 2019. The loan deal contains an option to make the deal permanent, reports Xinhua news agency.

"Aaron Martin is a very experienced player despite his young age. At the age of just 21 he already made more than 60 games in Spain's top flight," Mainz' sporting director Rouven Schroeder said.