The European Championship is set to be expanded to feature 24 teams from 2016 instead of the current 16, according to Franz Beckenbauer.
A Uefa executive committee meeting on Thursday discussed the issue and will rubber-stamp the decision on Friday.
"Yes for sure it's going to be 24 teams," said Beckenbauer, who is vice-chairman of Uefa's development and technical assistance committee.
"The European Championships will not lose any quality by that."