The Blues allowed Loftus-Cheek to go out on loan to their London rivals Crystal Palace during the 2017-18 Premier League season.
Loftus-Cheek impressed under former England manager Roy Hodgson with a return of two goals and three assists in the Premier League last season.
Current Three Lions boss Gareth Southgate included Loftus-Cheek in his World Cup squad following his impressive form for Palace.
Loftus-Cheek started England’s group stage fixtures against Panama and Belgium after he came off the bench in their World Cup opener in a 2-1 win against Tunisia.
Southgate started the Chelsea FC star for their 2-0 loss to Belgium in the World Cup third place playoff to get some vital experience under his belt at the age of 22.
Chelsea FC star Hazard wants the FA Cup holders to retain Loftus-Cheek’s services ahead of their first Premier League campaign under Italian head coach Maurizio Sarri.
Hazard told Evening Standard: “Ruben is a fantastic player. He is still young, of course, but I think if we can have him in the team this season it’s a plus for everyone.
“I know his quality. He is young, he is powerful. The future will be top for him.”
Chelsea FC finished in fifth place in the Premier League table last season to miss out on a Champions League spot under Antonio Conte.
His replacement Sarri has signed Napoli midfielder Jorginho and veteran England goalkeeper Rob Green so far.
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