Greece's sports minister has postponed the start of top-tier league matches for more than two weeks because of fears of violence.
Olympiakos have named former Portugal coach Paulo Bento as their new manager.
Olympiakos have sacked coach Victor Sanchez after less than two months in charge.
West Ham have completed the signing of Olympiakos left-back Arthur Masuaku.
Olympiakos have named Victor Sanchez as their new coach following the resignation of Marco Silva.
PAOK held Panathinaikos to a 1-1 draw on Tuesday to win the Greek league playoffs and earn a place in the qualifying round of the Champions League.