The 19-year old midfielder has departed Pittodrie Stadium for an opportunity in the Premier League, signing a three-year deal for an undisclosed fee, and delighting Latics boss Roberto Martinez.
"I'm excited, because we are signing such a strong character and a great personality at just 19 years of age," he told the club's official website.
"He's got a tremendous future in his hands and we're all delighted that he's making such a big step forward in his career here at Wigan Athletic.
"Technically he's very gifted, enjoys playing in the midfield where he can cover large areas, he's very powerful off the ball and in possession is someone who can read the tempo of the game very well.
"Also you have to remember that for such a young player he's played a lot of games in the SPL at a high standard which shows his maturity.
"Together with the rest of the squad and, of course, the other Scottish boys in the squad he'll settle in quickly I'm sure, but he's so eager to get going and take advantage of the good experience within the dressing room."