The Belgian has a contract with the Blues until 2020 but is repeatedly being linked with a move away from Stamford Bridge.
"I do not want to say Chelsea should pay him whatever he wants, because I do not know the numbers," the ex-midfielder told Goal.
"But in terms of the player, if you are a Chelsea fan, you want Hazard to stay. He is a world-class player, without a doubt. He is a talisman of the club, because he is magic, when a game is tied, he normally steps up to change things. He can create something out of nothing and I think he is fantastic.
"If you want to keep moving forward, you need to keep players like Hazard if you can and then add to it around him.
"I obviously hope he stays, but in terms of pay, do not ask me… That is for them to deal with."