Lyon's French forward Karl Toko-Ekambi reacts during the French Cup quarter-final football match between Olympique Lyonnais and Olympique de Marseille at the Groupama stadium in Decines-Charpieu near Lyon, central eastern France on Feb 12, 2020. (ROMAIN LAFABREGUE / AFP)

Olympique Lyonnais have signed on-loan Cameroon forward Karl Toko Ekambi from Villarreal on a four-year contract, the Ligue 1 club said on Tuesday.

Lyon exercised an option to buy the player in a deal worth 11.5 million euros (US$12.86 million) plus add ons which includes a sell-on clause of 15 percent of any future transfer.

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Ekambi, 27, has scored twice in eight league matches since joining the club on loan in January.

"Lyon is pleased to announce that it has taken up the purchase option for Ekambi from Villarreal," the French club said in a statement

“The Cameroonian international has signed a four-year contract with the Rhone club.”

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Ekambi, who has played 30 times for his country, played in Ligue 1 for Angers from 2016 to 2018, winning the Prix Marc-Vivien Foe award for the best African player in the top flight.