The UFC's return to Germany on May 31st has a main event set in stone, following an official announcement earlier today that Mark Munoz will face Gegard Mousasi in a five-round light heavyweight clash.

Munoz and Mousasi will both be desperately searching for a return to winning ways at the O2 World Arena in Berlin, after suffering defeats to the same man in their most recent outings.

Lyoto Machida is the nemesis in question after knocking out Munoz in Manchester last October, with Mousasi also dropping a decision defeat to the former champion earlier this month in his native Brazil.

Mousasi is back in the mix quickly though in his bid to become a genuine UFC title contender, hoping to follow Machida's route back to contention as he gears up to face Chris Weidman for the gold on May 24th.

The week after that title showdown both Berlin headliners have a chance to stake their claim for a top position in the light heavyweight rankings, as the UFC steps up its international operation by hosting dual events across two continents on the same day.

Wanderlei Silva is also slated to face bitter arch rival Chael Sonnen later that day, with both the company's new digital platform UFC Fight Pass driving a concerted effort to boost its international appeal.

Following the success of a show in London two weeks ago the organisation will visit Berlin, Abu Dhabi and Dublin in 2014, with trips to Sweden and Turkey also expected before the calendar year closes.

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