"I think his price-tag is £20m less," former Man City defender Micah Richards said of Kalidou Koulibaly on CBS Sports as cited by MEN.
"Everyone talks about how he is supposed to be composed on the ball, he's aggressive but I see similarities to Mangala - and he went to City and it didn't really work out for him there so I'm not totally convinced after that performance."
Kalidou, who is considered one of the best centre-backs in the world, put in a horror show in the Round of 16 clash against Barcelona at Camp Nou.
The Senegalese was fooled by Leo Messi when the Argentine doubled the Catalan's lead and conceded a penalty which made a comeback virtually impossible for Napoli.
The 29-year-old is linked with a move to the Etihad as Pep Guardiola looks to strengthen his defence.
Eliaquim Mangala is a name synonymous with the word 'flop'. He joined Man City back in 2014 for £42m but failed to justify this price tag as he made several costly mistakes.
