Since joining the London Club from Lille in 2012, He has twice been named Chelsea's Player of the Year, and also led the team to Premier League, EFL Cup and the Europa League titles.
While Hazard and the entire Chelsea team endured a difficult campaign in 2015-16, Cole, who was the Belgian teammate at Lille, believes he is destined to be revered at the club for years to come.
Cole told CFC Fan TV, “I think he'll go down as Chelsea's greatest player.
“He's certainly the most talented all-round footballer I've played with and he's already a hero with the fans. I hope he stays there for the rest of his career.
“My first game in France with Lille, [then-coach] Rudi Garcia was saying to me, 'we've got this good kid, Eden Hazard'.
“He said 'I want you to play with him'. And then he scored two of the best goals you'll see within 20 minutes and I thought, 'I don't know if I'm good enough to play with him'.
“He's just a nice kind, he's got a good way about him, he loves training, he loves football and everyone in that dressing room in France loved him.”