Paris, August 25: Rennes have confirmed three more players have tested positive for coronavirus.
The Ligue 1 side recorded a case of the virus last Thursday and carried out further tests on Monday.
The three players to return positive tests for COVID-19 will now self-isolate.
As a precaution, Rennes say they will split up into smaller training groups until further notice and will not permit media to attend any sessions.
Ligue 1 Fixtures | Marseille report three cases
Earlier, Marseille had also confirmed a trio of positive COVID-19 tests just three days before the start of Ligue 1.
Rennes are due to face Montpellier on Saturday in their second Ligue 1 match of the 2020-21 season.
They drew 1-1 at Lille in their opening game last weekend.