The 24-year-old French-born attacking midfielder has agreed a 6.5 million euro ($8.7 million) deal with a 50 million euro ($67m) buy-out clause, the club said.

Brahimi played up to Under-21 level for the French national side before switching to Algeria.

Capped seven times he impressed during the 2014 World Cup in Brazil where he scored his first international goal to help Algeria reach the second round for the first time.

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SOCIEDADE COMERCIAL FUTEBOL CLUBE DO PORTO