The 20-year-old centre joined York in 2012, and made his first-team debut in 2013 against Catalans Dragons in the Challenge Cup.
He is delighted to have made his way to a Super League club at last.
“I’m really excited, I’ve always wanted to play professional rugby league since I was a kid,” he said.
“Daryl was a big part in me choosing the Tigers, I’ve heard nothing but good words about him as a coach and as a person, he’s very good at developing young players and I can’t wait to work with him.
“The club is on the up and came close to silverware in the last two years. It’s an exciting time to join with a new stadium on the horizon, the club is clearly growing and moving in the right direction.
“Michael Shenton is a class player, there are lots of experienced senior players here who I’m looking forward to developing under.
“Pre season training is just around the corner and I’m really excited to get to know my new team mates and embrace full time training.”
Tigers head coach Daryl Powell is pleased to have added a player of such potential to his squad for 2016.
“Greg Minikin is an outstanding prospect,” he said.
“I have been really impressed with his ability during his time at York. He is a naturally strong player with a great instinct for the game.
“I’m confident he will be a consistent Super League player in the near future, and I look forward to our coaching staff helping him achieve his potential.”