By Wayne Veysey

1st Feb, 2016 | 8:56pm

Done deal: Everton seal third biggest signing in club's history

By North-west correspondent Alex Stevens

Oumar Niasse has joined Everton for £13.5million, the club announced on Monday night.

The Merseysiders have clinched a deal for the striker after reaching an agreement with Lokomotiv Moscow and finalising terms with the player.

Niasse arrived at Everton’s Finch Farm headquarters on Monday afternoon to discuss personal terms and complete medical tests.

The 25-year-old has become the club’s third most expensive signing, behind only Romelu Lukaku, who joined from Chelsea for £28million in 2014, and Marouane Fellaini, who arrived in a £15million transfer from Standard Liege in 2008.

Manager Robert Martinez has landed Senegal international Niasse after selling Steven Naismith to Norwich for £8.5million earlier in the window.

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Niasse has bagged 13 goals and supplied 10 assists in 23 matches this season, with four of his goals coming from just six Europa League appearances.