UEFA ordered Atletico Madrid to close a section of their stadium as punishment for fans displaying a far-right banner at the Europa League final.
Europe's biggest clubs want more teams in the Champions League and Europa League, and more matches for those participating.
UEFA has ordered Zenit St Petersburg to play their next European game behind closed doors in another racism sanction.
AC Milan are to lose their place in next season's Europa League as UEFA remains unhappy with their finances, a report in the New York Times states.
Ceferin said there was a range of sanctions available, up to and including exclusion from all European competition.
UEFA have announced that the Atatürk Olimpiyat Stadı in Istanbul will host the 2019/20 Champions League final.