The Spain midfielder is named in the XI at Anfield, with Fabinho and Curtis Jones also coming back into the team.
Trent Alexander-Arnold and Andy Robertson are restored in the full-back berths, with Jordan Henderson, Alex Oxlade-Chamberlain, Naby Keita, Joe Gomez and Kostas Tsimikas the players making way from the weekend win over Norwich City.
Liverpool: Alisson, Alexander-Arnold, Matip, Van Dijk, Robertson, Fabinho, Thiago, Jones, Diaz, Salah, Mane.
Subs: Kelleher, Konate, Milner, Keita, Henderson, Oxlade-Chamberlain, Minamino, Tsimikas, Origi.