Pereira, who won the Portuguese league title twice with FC Porto before moving to Saudi team Al-Ahli Jeddah at the beginnng of the 2013/14 season, takes over from former Spanish international Michel.


Vítor Pereira was assistant to André Villas-Boas no FC Porto in 2010/11, before taking over when Villas-Boas moved to Chesea.


Pereira joins Olympiakos at a time when they are second in the league, one point behind PAOK.