Alhassan, who is the younger brother of Black Stars midfielder Mubarak Wakaso will be playing alongside his compatriots Majid Waris at Lorient.
Alhassan Wakaso on Monday put pen to paper to agree a three year-contract with Lorient who are lying at the bottom of the French Ligue 1
The 24-year-old who earned his maiden Black Stars call-up agaisnt Egypt has been handed the number 23 shirt at Lorient
The midfielder joined Rio Ave permanently from Portimonense three seasons ago and has been worth all the money since his arrival.
Wakso started his European career with Portimonense and joined Rio Ave on loan, before seasling a permanent deal with the latter.