Jose Mourinho expects Eden Hazard to sign a long-term deal with Chelsea after announcing the Belgium playmaker is discussing a contract extension.

The 23-year-old signed for a reported £32 million ($52 million, 40 million euros) from Lille in 2012 and has become a key figure in his two years at Stamford Bridge.

Hazard has three years to run on his current deal but Mourinho believes Chelsea will want him to commit to a longer contract in a bid to ward off interest from rival clubs.

"We have big hopes that he will go from a top player to reach higher levels," said Chelsea manager Mourinho, speaking on the eve of the Champions League Group G opener with Schalke.

"He's a player we want to keep. It's true Chelsea is trying to have an agreement for a new contract.

"It will be a question of time. It will end with a new contract.

"He wants to commit to us and we want to commit to him for the future."