How the Blues line-up against the Hammers....
How we line up:
Starting XI: Caballero, Zabaleta, Otamendi, Stones, Clichy, Fernandinho, Silva, De Bruyne, Nolito, Sterling, Aguero
Subs: Hart, Fernando, Nasri, Kolarov, Navas, Delph, Iheanacho
Pablo Maffeo, Kelechi Iheanacho and Fernando - in come Willy Caballero, Pablo Zabaleta, Nicolas Otamendi, David Silva, Sergio Aguero, Raheem Sterling, Kevin De Bruyne and Fernandinho.
As ever (!), not easy to figure out the exact formation but safe to assume Otamendi and Stones will partner in central defence with Clichy and Zabaleta as full-backs - that's the easy part!
In midfield, it looks as though Fernandinho will lie deep with Silva and De Bruyne more advanced, Nolito and Sterling out wide and - of course - Aguero up front. On paper, that's a 4-5-1!
For West Ham, there's no Dimitri Payet for the visitors who appear to be going 3-5-2 - it should be a fascinating battle between two of the Premier League's most innovative managers...