1963–64 AEK Athens F.C. season

The Syrian Ibrahim Mughrabi returned to his homeland, Thanasis Gouvas and the Cypriots, Panikos Krystallis and Dimitris Zagylos left, while Giannis Marditsis, after his participation in the first match against Monaco, effectively withdrew from the team.

Several players were added to the roster, such as the goalkeeper, Theodoros Maniateas from Panthisiakos and Panagiotis Charalambidis from Iraklis, the striker of Atromitos, Kostas Papageorgiou and most importantly, Fanis Tasinos who emerged as the best left midfielder of the previous season with Pagkorinthiakos.

Along with the renewal of the roster, the administration of yellow–blacks surprised everyone by removing from the technical leadership Jenő Csaknády, the coach who crowned them Champion in the previous season.

The first appearance in a UEFA match quickly turned into a nightmare as they faced an imposing 7–2 defeat at Stade Municipal du Ray, on 18 September.

[1] The rematch in Athens on 2 October, was purely procedural, as 1–1 draw couldn't change anything in the qualification outcome, as it was secured by the Monegasques from the first match.

Taking into account the 7–2 defeat in the team's maiden European appearance in Monaco, Serafidis returned to the starting eleven, but precious ground had been already lost in the title race.

In the other semi-final, which was held on the same day, a derby took place that was destined to go down in history for non-competitive reasons and characterized as the "Holocaust of Leoforos".

There they gathered all the wooden objects and set them on fire, and then attacked football players, referees and coaches, together and without getting involved with each other.