The 21-year-old comes in for Ryan Bertrand in Roberto Di Matteo's only change from the weekend draw with QPR, with Andrea Pirlo among the familiar faces in the Italian's line-upOscar makes his first start for Chelsea in their Champions League opener against Juventus.
The Blues start their defence of their European crown at Stamford Bridge, where Roberto Di Matteo makes just one change from the side that drew 0-0 with QPR in the Premier League on Saturday, the 21-year-old replacing Ryan Bertrand.
Fernando Torres keeps his place as the lone striker, while the impressive Eden Hazard continues in midfield alongside another Brazil international, Ramires.
Elsewhere, the back-five remain the same, with John Terry and David Luiz keeping Gary Cahill on the bench, along with new signings Cesar Azpilicueta and Victor Moses.
As for Juventus, there is no place for Nicklas Bendtner in the side after he joined on loan from Arsenal in the summer. The Serie A outfit's coach, Massimo Carrera, instead plays Sebastian Giovinco up front, with an attacking three of Mirko Vucinic, Kwadwo Asamoah and Arturo Vidal in support.
Andrea Pirlo, who Frank Lampard, Ashley Cole and John Terry will know well from Euro 2012, will be looking to pull the strings from midfield in west London.
Chelsea starting XI: Cech; Ivanovic, Luiz, Terry, Cole; Mikel, Lampard; Ramires, Oscar, Hazard; Torres
Subs: Turnbull, Azpilicueta, Cahill, Bertrand, Romeu, Mata, Moses
Juventus starting XI: Buffon; Lichtsteiner, Barzagli, Bonucci, Chiellini; Marchiso, Pirlo; Vucinic, Asamoah, Vidal; Giovinco
Subs: Storari, Lucio, Giaccherini, Isla, Marrone, Quagliarella, Matri