Newly elected UEFA president Aleksander Ceferin on Wednesday reiterated his belief that it may be possible to block planned changes to the format of the Champions League.

The European governing body announced last month that England, Spain, Italy and Germany will each be guaranteed four berths for their clubs in the tournament between 2018 and 2021.

The move was criticised by smaller European nations and although it has been ratified by UEFA's executive committee, Ceferin suggested the changes may not be set in stone.

When it was put to him that it will be impossible to change the format of the Champions League before 2021, he replied: "I don't necessarily agree with you, so let's see.

"Of course it's not good for the small and mid-size associations. But as I told you, it was my first day yesterday. I have to check what were pluses and minuses about that decision.

"There were certainly pluses and minuses and I will look on it and act. Everything can change."

Ceferin was speaking at an event to launch Euro 2020 at London's City Hall.

The 48-year-old Slovenian lawyer beat Royal Dutch Football Association chief Michael van Praag by 42 votes to 13 in last week's UEFA presidential election.