Uefa will not be told what to do after the Kylian Mbappe contract extension was criticized.
The French club's contract offer was called scandalous by La Liga after the 23-year-old decided to stay.
Uefa has strict financial fair play rules, according to Ceferin.
Whoever will respect the rules is welcome to play in the competition.
Real Madrid or anyone else will not tell Uefa what to do. They are angry from one point of view and their offer was similar to the one that PSG offered.
Financial fair play rules designed to prevent club expenditure exceeding income by more than a set amount over each three-year assessment period
The president of Spain's La Liga has described the contract offer from Paris Saint-Germain to Kylian Mbappe as an insult to football and pointed to the club's financial losses.
The state-run QIA is the owner of the sports team.
The president of European football's governing body says he is tired of people complaining about the sport's willingness to allow state-run clubs.
I have said that many times and I will say it again, but they should not be the owners of a club.
The other English clubs have owners from the United States, the Middle East, and England. I am really tired of these accusations without any concrete grounds and it is exactly the same situation.
If you break the rules, you will be punished.
The situation in Ukraine was also discussed by Ceferin. Uefa helped the Ukrainian national team find a solution in their move to train in Slovenia before their World Cup play-off against Scotland.
The country's national team have not played a competitive fixture since November and have been unable to prepare normally because of Russia's invasion of Ukraine.
The displacement created by the conflict will mean that clubs from Ukraine will have to find similar solutions.
They will have to play away, even home matches, but it will depend on the clubs where they decided to prepare for the season. It is impossible that they play at home.