Kiradech Aphibarnrat has signed a three-year contract with IMG.
The 25-year-old Thai, who won the Asian Tour Order of Merit in 2013, said yesterday that he was now managed by International Management Group and hoped the deal would help him improve on the golf course.
"This year I will focus on the European Tour so I chose an international company," he said.
"I think they can help me, and I will work harder to get chances to play in big tournaments."
Kiradech, who won the European Tour's Malaysia Open in 2013, said he felt grateful to his former management team at Thai firm Sports Management Group (SMG).
"They did a good job but it's time to move on,'' said the two-time Asian Tour winner.
Kiradech is the fifth Thai golfer under IMG after Thongchai Jaidee, Chapchai Nirat, Moriya Jutanugarn and Ariya Jutanugarn.
Also, Kiradech will have a new caddy in Surawut Wannapintu who previously worked with Thongchai and Boonchu Ruangkit.
"I am ready for the new season,'' said Kiradech.
"My target is to win at least one title in Europe."