The Clarets announced the arrival of N'Koudou from Spurs earlier this week, with the 22-year-old moving to Turf Moor until the end of the 2017-18 campaign.
The attacker has only scored once in 23 appearances for Tottenham since a 2016 move from Marseille, but Dyche is confident that the former France Under-21 international will impress at Burnley.
"He hasn't played a lot but we believe him to be a wide player who's direct, he's got pace and a bit unknown," Dyche told reporters.
"He's come into Tottenham and it's not an easy team to break into so we'll wait and see. He's certainly come in bright and vibrant and he's keen to make a mark on the division, let alone on Burnley."
N'Koudou could make his debut for Burnley in Saturday's trip to Crystal Palace.