Cole told Sky Sports: "I don't want to think about it [Chelsea without Hazard]. He was brilliant today, the way he gets players involved in the game, and the chances he had, he was unlucky today.
"They have to keep him. It is a must. I don't see why he would want to leave, the club loves him and he loves the club, but whether it is to Real Madrid, another club he loves and with Zinedine Zidane, it could be difficult to keep him.
"For me, I hope he stays, and I think he will stay."
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