Ramires and Andre Schurrle trained with Chelsea on the eve of the Champions League Group G clash with Maribor, but Diego Costa was absent.
Brazil midfielder Ramires (groin) and World Cup-winning Germany forward Schurrle (illness) missed Saturday's win at Crystal Palace.
Costa, scorer of nine goals in seven Premier League games for the leaders, was also missing at Selhurst Park after persistent hamstring problems this season.
Costa was again absent for the first 15 minutes of Monday's training session, which was open to the media, with an otherwise full squad at Jose Mourinho's disposal.
CSKA Moscow striker Ahmed Musa claims Manchester City are "weak" opponents but it is unfair that his team have to face them without supporters.
Gareth Bale has been ruled out of Real Madrid's Champions League trip to Liverpool this week through injury - reports say.
Join Adrian Chiles and co. at Stamford Bridge for live coverage of Chelsea's clash with Slovenian champions Maribor.
Ten years ago today, Lionel Messi made his debut for Barcelona. It's fair to say he's done okay in the last decade, not least in the Champions League, as this highlight reel shows…
Russian club CSKA Moscow have been ordered to play their next three home European matches behind closed doors - including against Manchester City in the Champions League on October 21 - as punishment for racist behaviour by fans.
Manchester City are waiting to learn whether their Champions League group match at CSKA Moscow will have to be played behind closed doors.
Arsenal could be fined by UEFA following crowd disturbances during Wednesday night's Champions League tie against Galatasaray, with the Turkish club likely to face much more severe sanctions after their supporters threw flares onto the pitch at the Emirates Stadium.