Gonzalo Higuain makes his Chelsea debut this evening as the striker is named in the starting line-up by Maurizio Sarri.
The big news with regards to team selection for tonight's FA Cup tie against Sheffield Wednesday is the inclusion of Higuain, who is chosen to lead the line after joining the club on loan for the remainder of the season in midweek, and there are also starts for youngsters Ethan Ampadu and Callum Hudson-Odoi.
Willy Caballero starts in goal and in defence both Andreas Christensen and Marcos Alonso come into the side.
Ampadu is expected to play as the deep-lying midfielder, while further forward Hudson-Odoi and Willian will play either side of Higuain.
Ruben Loftus-Cheek, who hasn't featured since limping out of our third-round win over Nottingham Forest, is named among the subs.
Both N'Golo Kante and Eden Hazard aren't included in the matchday squad.
Former Blue Sam Hutchinson starts for the visitors although Michael Hector, on loan at Wednesday from Chelsea, is ineligible to feature.
Caballero; Azpilicueta (c), Christensen, Rudiger, Alonso; Barkley, Ampadu, Kovacic; Hudson-Odoi, Higuain, Willian.
Subs: Kepa, David Luiz, Emerson, Jorginho, Loftus-Cheek, Pedro, Giroud.
Westwood, Palmer, Fox, Pelupessy, Fletcher, Bannan, Thorniley, Lees, Reach, Boyd, Hutchinson.
Subs: Dawson, Baker, Pudil, Matias, Nuhiu, Joao, Forestieri
Tonight's referee is Andre Marriner.
Key stats recap
On Thursday, Chelsea qualified for our 15th final since the arrival of Roman Abramovich in 2003.
Chelsea are seeking to reach the FA Cup fifth round for the 23rd time in 28 attempts.
The Blues have won our last nine home FA Cup games, including the one on penalties against Norwich last season. League One side Bradford City were the last team to defeat us here in the competition, in the fourth round in 2015.
Chelsea have scored in all 46 FA Cup games that we have played at home since January 2000.
The last team to keep a clean sheet at Stamford Bridge in the FA Cup was Manchester United in the quarter-final in 1999.
Maurizio Sarri’s side have won 14 and drawn four of our 19 home games this season. Our only defeat was against Leicester before Christmas.
Eden Hazard has scored in 46 home games without ending on the losing side, winning 39 and drawing seven.