Hazard, 27, who has two years left on his contract, is on Real Madrid's radar but says he will sign a new deal at Stamford Bridge.
"We know Chelsea, they are champions", Puel said.
Puel said: "I think it is important to continue to play with a good ambition and with a good play on the floor".
"They have a lot of quality so it is not a problem for them".
Chelsea v Leicester City Betting Preview
Leicester City team news: Leicester had themselves a festive rough period with four losses in five games in the second half of December dropping them back a bit in the table. Midfielder Adrien Silva is set to make his first start for Leicester - he is the player they signed to replace Chelsea-bound Danny Drinkwater but missed the Federation Internationale de Football Association registration deadline by minutes on transfer deadline day.
"He can play wide or striker or come back to take the ball. He is a young player who arrives in a good team where there is competition and he needs to keep working and improve".
Swift improvement is needed if his first-team stars are to take anything from their trip to west London, with Chelsea having scored 10 goals and conceded only one in their last four home matches.
"Of course now he has more consistency in his game but always he is fantastic in his play and has the ability and capacity to make good penetration and give good assists".
I was going to leave Bristol City out this weekend because they could well be exhausted from their near-heroic exploits at Man City on Tuesday, but they're odds against at home to an inconsistent Norwich side which has tempted me to back them to win or draw.
Vardy's absence from the squad at Highbury Stadium represented not just a disappointment for the Fleetwood fans hoping for another chance to see him live in action once more, but also deprived the visiting team of some much-needed firepower. However, Puel has pointed to Leicester's highly-competitive clashes against the Premier League big boys as a key reason as to why the Foxes could collect three points this weekend.
Trump chides Feinstein, urges GOP to control Russian Federation probes
Feinstein said last week she wasn't consulted on the referral and called it an attempt to deflect attention. Trump on Wednesday went further, branding Feinstein's move as "underhanded" and potentially illegal.