The 23-year old attacker has departed Motherwell for a three-and-a-half-year deal with the League One Blades and he is now targeting some international caps as he looks to further his development in England.
"I hope if I'm playing well someone will take notice. I can maybe make a push for the Scotland squad, but it's up to me to work that little bit harder. I wouldn't say I'm under their radar, but I'm sure the first cap is the hardest to get," he said.
"If he said to me it wasn't a great club I don't think I'd be here. He means a lot to me, he's done a lot for my career, so I listen to his advice.
"Everyone wants to play at the highest possible level and I'm sure the club here are no different, so if I can be part of that then fantastic.
"I've never left the city of Glasgow to stay, so coming down here was a big decision, but it's definitely the right decision at this time and I'm looking forward to it.
"I'm an ambitious person myself and the club is; the club wants to push on and get higher and to be a part of that will be good."