Chelsea manager Antonio Conte included four youth players in Tuesday's training session ahead of tomorrow's Champions League group match against Roma.
Defensive midfielder Ethan Ampadu, right-sided player Dujon Sterling, defender Jake Clarke-Salter and midfielder Kyle Scott all took part in the session, according to The Mirror.
Ampadu has already featured this season - in an EFL Cup match - while Scott was named among the substitutes in Saturday's shock 2-1 defeat to Crystal Palace.
Meanwhile, Alvaro Morata has provided the team with a major boost by returning to training at Cobham this morning as he continues recovery from a hamstring injury.
Chelsea have won back-to-back games, which has put them at the top of Group C.
