Olympiacos have parted company with coach Vitor Pereira, just two months on from their Greek Super League title success.
The 46-year-old, who has previously enjoyed time in charge of Porto and Al-Ahli, spent six months at the Georgios Karaiskakis Stadium.
As well as guiding the Erythrolefkoi to top spot in the Greek top flight, Pereira also claimed the domestic cup upon succeeding Michel in January.
A brief statement on the club website read: "Olympiacos announces the mutual consent termination of cooperation with the coach Vitoria Pereira."
Rangers and Turkish club Fenerbahce have both previously been linked with the Portuguese coach.