He's previously worked with the likes of Adele, Sia and Katy Perry.
"Niall wrote with One Direction but he's got a real talent, and the bosses are hoping to make the most of that by teaming him up with some brilliant people," an insider revealed.
Niall gushed about Hailee on her birthday last month, captioning a cute photo of them, “Happy birthday to the loveliest person on the planet and one of my best friends.Have no idea what the hell is going on in this photo.All through One Direction's triumphant chart achievements, pop pandemonium and gruelling touring schedule across the world, Niall Horan always seemed like the one who was having the best time.The smiley, cheeky Irish charmer took to international fame quite effortlessly, and fans all over the world loved him back. Despite saying he was going to take a year out to travel and play golf following One Direction's hiatus in early 2016, Niall couldn't help himself and started work on brand new music.It's a lovely swaying guitar-led ballad that hears him team up with Adele hit-maker Greg Kurstin.
Surely with the first taster of Niall's solo music out there, it's all leading up to the full album being released before Christmas.
Because of that, it seems his label didn't want to hang around getting the music to fans.
On September 29, Niall sent the 1D fandom into meltdown by surprising them with his first solo song 'This Town'.
How this has come about, we do not know, but the bookies have odds down as 11/4.
We can't see it ourselves, but stranger things have happened in the world of pop.
Hailee Steinfeld is addressing rumors that she and Niall Horan are an item.