The Frenchman has been allowed to skip group training over safety concerns due to the coronavirus pandemic.
Kante lost a brother to a heart attack two years ago and has suffered his own health problems in the past.
Goalsays the World Cup winner trained alone at Cobham on Thursday.
The new is positive for Chelsea, who will desperately need Kante fit and firing for their final nine Premier League matches.
Clubs have voted for matches to resume on June 17, with the Blues hoping they can remain in fourth-place by the end of the season.