It looks like Arsenal will play 4-2-3-1 tonight, which proves that really do need two men to replace Thomas Partey. He is a phenomenal player, good enough for any team in the world.
Team news
Romelu Lukaku starts a Premier League game for the first time since 19 February, when he infamously had only seven touches away to Crystal Palace.
It looks like Ben White will play at right-back for Arsenal, while Eddie Nketiah is preferred to Alexandre Lacazette.
Chelsea (3-4-1-2) Mendy; James, Christensen, Sarr; Azpilicueta, Loftus-Cheek, Kante, Alonso; Mount; Lukaku, Werner.
Substitutes: Arrizabalaga, Chalobah, Thiago Silva, Barkley, Jorginho, Saul, Pulisic, Ziyech, Havertz.
Arsenal (4-2-3-1) Ramsdale; White, Gabriel, Holding, Tavares; Elneny, Xhaka; Saka, Odegaard, Smith Rowe; Nketiah.
Substitutes: Leno, Cedric, Swanson, Azeez, Lokonga, Hutchinson, Pepe, Martinelli, Lacazette.
Referee Jon Moss.
There are three other Premier League games tonight, including Everton v Leicester and Manchester City v Brighton. Oh sod it, I might as well tell you that the other match is Newcastle v Crystal Palace.
More importantly, we have a special Clockwatch for those games.
Preamble
Hello and welcome to live coverage of Chelsea v Arsenal from Stamford Bridge. I doubt anyone connected with Chelsea will agree, but to the neutral liveblogger this game feels far more important for Arsenal.
Chelsea are going to finish third, barring a tale of the seriously unexpected, whereas Arsenal are involved in an increasingly messy struggle for fourth place. A disturbing run of four defeats in five games has wounded their hopes of qualifying for the Champions League for the first time since 2016-17.
Injuries, outgoing loans and the inherent irreplaceability of Thomas Partey have left Arsenal short in recent weeks, and few people fancy them to get anything tonight. But a win or even a draw at Stamford Bridge would change the mood for the umpteeth time in their topsy-turvy season, especially as their top-four rivals all have imperfections of their own.
Spurs, despite Antonio Conte’s best efforts, are still Spurs, Manchester United are a laughing stock and West Ham are understandably distracted by the Europa League. To borrow a phrase beloved of Arsenal fans, fourth place is still up for grabs.
Kick off 7.45pm.