Ancelotti watched the reserves on Monday, with 21-year-old Serbia international Nemanja Matic, a low-key summer signing from Kosice in Slovakia, catching the eye.
"You see the manager at every reserve team game," said Blues captain John Terry. "He is watching the players to see if they're able to step up into the squad. Speaking to the other players in and around the reserves, they're all encouraged by seeing Gael (Kakuta) and Fabio (Borini) come on.
"It's a lot harder to come through now because you can buy players rather than bring them through and it's harder to throw young players in, given how difficult games are in the top flight.
"But they need to believe and kick on and not settle for being a reserve because, if you make it, it can be the time of your life."