Bolasie is Everton's fourth major signing of the summer.
Medeama beat TP Mazembe as holders Etoile du Sahel advance.
Bolasie has scored nine goals in 89 Premier League games.
Sunderland sign defender Papy Djilobodji from Chelsea.
Gernot Rohr previously coached Gabon, Niger and Burkina Faso.
Andre Ayew scored 12 goals in 34 games for Swansea in 2015-16.
Ogenyi Onazi joins Trabzonspor from Lazio 'to clear my head'.
Ghana midfielder Kevin-Prince Boateng joins Las Palmas.
Chelsea winger Mohamed Salah signs for Roma on permanent deal.
Jorge Costa had been in charge of Gabon since 2014.
Patrick Twumasi is a Ghanaian professional footballer who plays as a right winger for K League 1 club Jeonbuk Hyundai Motors. Twumasi was called up to the senior Ghana squad by Avram Grant for a 2017 Africa Cup of Nations qualifier against Mauritius in June 2016. He made two appearances for the Ghana national team in 2017.
Ghana
Korea Republic