UEFA, CONCACAF and the Asian Football Confederation have called for an independent investigation into the FIFA Forward Enterprise (FFE) controversy.
UEFA's 55 member associations will meet virtually later this week for emergency talks aimed at forming a united response to FIFA's contentious plans to open its flagship competitions to outside investment.
UEFA has launched a scathing attack on FIFA after the world governing body controversially suspended the one-match ban imposed on United States forward Folarin Balogun.
Galatasaray general secretary Eray Yazgan says the club will sue UEFA after Noa Lang sustained a serious hand injury during a Champions League tie on Wednesday.
Paris Saint-Germain's newest signing was on the training pitch this week, but UEFA regulations mean he will play no part in Wednesday night's Champions League showdown with Newcastle United.
Real Madrid have launched legal action against UEFA, demanding over 4 billion euros in damages for losses they claim were caused by the governing body's opposition to the European Super League.