Neymar and Kylian Mbappe were among the Paris Saint-Germain stars to report back at the club's training ground on Monday.
Thomas Tuchel's first-team squad attended the Ooredoo Centre to undergo medical checks, including Covid-19 tests, ahead of a planned return to training on Thursday.
A total of 27 players reported back to the club on Monday, the notable exceptions being Edinson Cavani and Thomas Meunier, who are due to leave the club at the end of this month.
As a result of their upcoming departures and the end of their current contracts, Cavani and Meunier will not play for PSG when the Champions League resumes.