Tottenham slipped to third in their Europa Conference League group and will have to beat Rennes to progress if their postponed fixture is rearranged.
Antonio Conte's side are three points behind Vitesse in Group G with the same goal difference.
Spurs' match with Rennes was called off after a Covid-19 outbreak at the club.
Uefa says it will look at the issues that led to Tottenham stating that the game would not take place.
European football's governing body must determine the fitness of Tottenham's squad, plus the extent of the health guidance offered before making a ruling.