The teams: Chelsea v Barcelona
Marcos Alonso returns having missed the two previous games and there are starts for Pedro, against his former club, and Willian and Eden Hazard upfront.
Our other ex-Barcelona player, Cesc Fabregas, is in midfield alongside N'Golo Kante, and Andreas Christensen and Cesar Azpilicueta both return to the defence having been rested from the FA Cup game against Hull. Thibaut Courtois is back too.
There is a place on the bench for 17-year-old Callum Hudson-Odoi.
Barcelona are unchanged from their domestic game at the weekend.
Chelsea are expected to line-up as:
Courtois; Azpilicueta (c), Christensen, Rudiger; Moses, Fabregas, Kante, Alonso; Willian, Hazard, Pedro.
Subs: Caballero, Cahill, Zappacosta, Drinkwater, Hudson-Odoi, Giroud, Morata.
Barcelona are expected to line up as follows:
Ter Stegen; Sergi Roberto, Pique, Umiti, Jordi Alba; Rakitic, Busquets; Paulinho, Messi, Iniesta (c); L Suarez.
Subs: Cillessen, Vermaelen, D Suarez, Digne, Vidal, Gomes, Dembele.
Today's referee is Cuneyt Cakir from Turkey.