The Ivory Coast international passed his medical on Tuesday and will sign a two-year contract with the club when he becomes a free agent.
Brendan Rodgers has moved for the 32-year-old to add inexpensive but experienced cover to a Liverpool defence that has lost Jamie Carragher to retirement and could lose Martin Skrtel plus Sebastián Coates this summer. Touré, who won the Premier League with both City and Arsenal, underwent the medical following his return from his current club's post-season tour of the United States but remains under contract at the Etihad Stadium until the end of next month.
A Liverpool statement confirmed: "The powerful defender will be registered as a Reds player when his current deal with Manchester City expires."
The Liverpool manager wants at least two new central defenders this summer and hopes Touré will be followed into Anfield by the Greece international Kyriakos Papadopoulos.
Rodgers has made the 21-year-old Schalke player his main defensive target, having cooled on Ashley Williams at his former club Swansea City, and Liverpool may have to pay over £12m to land the coveted centre-back. Schalke prepared for the anticipated departure of Papadopoulos by completing the signing of Felipe Santana from Borussia Dortmund on a three-year contract on Tuesday.
"We want to get work done as quickly as we possibly can. The guys behind scenes are doing a great job," Rodgers said.
Touré represents the start of that process but with doubts surrounding the Liverpool futures of several players, including Luis Suárez, José Reina, Skrtel, Andy Carroll and Stewart Downing, Rodgers admits a figure has not been placed on his transfer budget this summer by the club's owners, Fenway Sports Group.
guardian.co.uk © Guardian News and Media Limited 2010
image: © Alfonso Jimenez