Firmino missed the win over Burnley with a thigh injury but he comes back into the side as Divock Origi drops to the bench.
Elsewhere Ragnar Klavan starts at the back with Joel Matip with Emre Can continuing in midfield.
City name an attacking line-up with Leroy Sane, Kevin De Bruyne, David Silva and Raheem Sterling playing behind Sergio Aguero.
Bacary Sagna is on the bench with Fernandinho starting at right-back.
Willy Caballero continues in goal in place of Claudio Bravo.
Read the full article on eurosport.co.uk: Team news: Firmino returns for Liverpool, City name attacking line-up