The six-year-old only returned from injury with a spin on the Flat at Dundalk last month but he also holds an entry there on Friday.
Kalann is a course winner at Prestbury Park but was sidelined for 17 months after sustaining an injury in the 2012 Champion Hurdle won by Rock On Ruby.
“We might run him at Cheltenham if the ground comes up good,” said County Kildare-based Harty.
“The forecast is pretty favourable so we left him in and we’ll see how the week goes.
“He seems in good form after his run at Dundalk and we’re happy with him.
“We gave him a good rest after he picked up an injury in the Champion Hurdle. It wasn’t bad, but he’s a young horse and we wanted to give him plenty of time.
“He’s very well and fresh in himself and loves good ground. He has a nice weight and is only 1lb higher than in Ireland and looks nicely in at the weights.
“It’s a possibility he’ll go there, but we’re not sure yet. He has an option in Dundalk as well so if they do get showers at Cheltenham, he might go there. We are keeping our options open.”
Gordon Elliott’s Fred Winter Juvenile Handicap Hurdle winner Flaxen Flare, Thomas Edison from Tony Martin’s stable, Matthew Smith’s Rawnaq and Michael Hourigan’s Enchanted Forest are the other Irish-trained entries among a field of 20 left in the big handicap at the confirmation stage.
The latter was originally omitted from the list of confirmations sent by Weatherbys and added later.
Last year’s runner-up Cash And Go, trained by Nicky Henderson, could bid to go one better after finding only Olofi too strong 12 months ago.
Henderson has another entry in Rolling Star, a smart juvenile last term and sixth in the Triumph Hurdle.Cash And Go has been at the top of the ante-post market along with the John Ferguson-trained Pine Creek, who won in good style on his seasonal debut at Ascot earlier this month.