The Paris Saint-Germain boss is confident the Belgium winger will be staying in the English capital and says there is no truth to rumours he will move for Antonio Candreva
PSG completed the signing of defender David Luiz from the Blues in a big-money deal earlier this month and have been persistently linked with the Brazilian's former team-mate Eden Hazard.
The Belgium forward has previously stressed he will stay at Stamford Bridge and even spoke of talks over a new contract, and Blanc said the former Lille man is set to stay in England.
"Eden Hazard? He is a top player," he told RMC.
"But what is certain is that Chelsea want to keep him."
PSG have also been linked with a move for Italy international Antonio Candreva, who is now owned solely by Lazio following an agreement over their previous co-ownership deal with Udinese.
Lazio president Claudio Lotitio has insisted he will not sanction the winger's sale this summer, and although Blanc claims the rumours over PSG's interest are unfounded, he did hint at further arrivals at the Parc des Princes this summer.
"Honestly there isn't anything to it [the Candreva talk]," he added.
"David Luiz was the priority. We're going to wait and see [about other transfers]."