Andreas Christensen and Emerson are doubtful for Chelsea's clash with Newcastle United on Saturday, according to Goal.
Emerson has been out of action since September with a hamstring problem, but he has not officially been ruled out of facing the Magpies.
Christensen picked up a hamstring problem over the international break.
In positive news for the Blues, Antonio Rudiger could be eased back by Frank Lampard's after an interrupted start to the season.
Reece James, N'Golo Kante and Mateo Kovacic also picked up injuries over the international break.
