Tensions have ramped up in UEFA's civil war following the resignation of chief football officer Zvonimir Boban in protest of proposed rule changes which could keep president Aleksander Ceferin in power beyond his current three-term limit.
Ceferin has headed the organisation since 2016 but could yet stay there until 2031, with the former lawyer planning to alter UEFA statutes so that his initial three years in power would not be counted.
Mail Sport reported in December that former Manchester United chief executive David Gill - who sits in UEFA's executive committee - was among the individuals leading opposition to the proposed term changes.