The move looks likely to signal the end of speculation regarding a deadline-day swoop from Liverpool.
However, there is no place for Michael Essien as talk surrounding his departure grows.
Thibaut Courtois will start between the sticks for the La Liga side, playing against his parent club.
Chelsea: Cech; Ivanovic, Cahill, Luiz, Cole; Ramires, Mikel, Lampard; Hazard, Torres, Mata
Atletico Madrid: Courtois; Juanfran, Miranda, Godin, Filipe Luis; Mario Suarez, Gabi; Adrian, Koke, Turan; Falcao