Ivorian international defender Kolo has confounded his critics and proved his enduring worth since his free transfer to Anfield.
Liverpool’s defensive strength in depth is impressive, and Toure has provided the experience and leadership the club required following the retirement of stalwart Jamie Carragher.
He had been sidelined under former City boss Roberto Mancini, and deeming him inferior to Joleon Lescott and Matija Nastasic, City let Toure go.
The 32-year-old says he warned City that they were making a mistake be releasing him, and claims that his rejuvenation at Liverpool proves his point.
"I was better than certain players at Manchester City but I was left on the bench," Toure said, according to Sky Sports.
"Before I left the club, I told the people in charge that they would regret letting me go. People said I was finished and that I could never get back to my former level.
"But now I am at Liverpool - and I am sure that City must be kicking themselves when they see how I am performing."
Kolo says that his situation is similar to that of his brother, who was thought inferior to Sergio Busquets at Barca.
Now at City, Yaya Toure is one of the world’s best midfielders, and the “big boss” on the field.
"I have had a similar experience to Yaya," Kolo explained.
"Managers come to clubs bringing players with them and they want to pick them at all costs - whether they are any good or not.
"Yaya was much better than Sergio Busquets at Barcelona. But he was behind him in the pecking order and he found that hard to accept.
"I advised him to come to Manchester City while I was still there.
"He listened to his big brother's advice - and now he is the big boss on the field for them."