The former Paris St-Germain manager came in to replace Arsene Wenger in the summer, who Puel used to play under at Monaco.
A win will move Arsenal to within two points of the top of the table but Puel is prepared to reserve judgement over whether they can win a first title since 2004.
They can have good confidence for the future, but for the title I don't know
Claude Puel
He said: "We will see. He started with some difficulties and lost (the) first two games but after they have worked and played well to win games in the cup, Europa League and Premier League.
"They have nine wins at this moment which is incredible. They are confident in their play. They are more direct and clinical at the moment, with a clinical player like (Alexandre) Lacazette for example.
"They can have good confidence for the future, but for the title I don't know. It is just the beginning of the season and the Premier League has a lot of possibilities.
"He can make a fantastic job. It is not easy to take the team after Arsene Wenger. We know how this manager can give for this club.
"Starting this season with a new manager and perhaps a lot of pressure, their beginning of the season has been fantastic and I have a lot of respect for this manager and the quality of his work.
"Perhaps Arsene wanted a little more possession in his game and perhaps it is more direct with Emery. Two different but good philosophies and styles of game."
Arsenal vs Leicester TV channel: Find out how to watch the match (Image: GETTY)
The Premier League clash will be shown live on Sky Sports Main Event and Sky Sports Premier League in the UK.
The game kicks off at 8pm BST, with pre-match coverage getting underway at 7pm.
Existing customers will also be able to stream the action via the Sky Go app, which can be downloaded across a host of devices.
Fans without a subscription can still live stream the match by purchasing a NOW TV sports pass.
Day Passes start at £7.99 and give you 24 hours of access to Sky Sports channels without locking into a contract.
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