Craig Brown has said that Ryan Fraser has made the wrong decision in turning down a new deal at Aberdeen.
The 18-year-old midfielder is out of contract at the end of the season.
The Dons manager told the club's website: "The club made the player what was the best offer they possibly could and it's very disappointing that he has chosen to see his future elsewhere.
"It was indicated to the club that Ryan believes he is ready to play at a higher level than the SPL and I have to say I think that is the wrong decision.
"He would be far better to continue to learn his trade here with Aberdeen and I only want players here who are 100% committed to Aberdeen Football Club."
Fraser joined the club in May 2010, aged 16.
