Fans of Greek arch rival soccer teams Olympiakos and Panathinaikos will join united the mass protest in Athens scheduled for 5 pm on Sunday. The fans of Panionios will also join the common protest. Estimated 4,ooo fans will meet at 2.30 pm at the Metro station <Agios Dimitrios> and head to Greek parliament. The deal among the soccer teams fans was achieved on Friday evening.