Capped 13 times by the Netherlands, Ake missed Bournemouth's final three Premier League fixtures after suffering a groin injury in 4-1 win over Leicester on July 12.
City, which finished runner-up in the Premier League, is looking to strengthen the centre of its defence as Pep Guardiola looks to improve his squad for a title challenge next season.
According to several reports, including the Athletic, Sky Sports and BBC, the Dutch centre-back is on the verge of joining Manchester City.
Frank Lampard's side decided not to use their buy-back clause for the 25-year-old, clearing the path for the central defender to join City.
Warnock feels that Manchester City need a leader at the back and does not think Ake is the man.
Star defender Aymeric Laporte missed a large chunk of the season due to injury, while England worldwide John Stones has seemingly fallen out of favour with manager Pep Guardiola.
Ake made 29 appearances for Eddie Howe's Bournemouth in the Premier League this season and chipped in with two goals, scoring against Southampton and Aston Villa.
"I speak with him quite a bit at the national team and I think he's a fantastic player as well".
As well as moving early for Ake, City are closing in on a deal for Torres, 20, who has been identified as a replacement for Leroy Sane.