Fyvie’s current contract ends in December and the teenager has made it clear he has no intention of extending his stay at Pittodrie.
English Premiership outfit Fulham have been linked with a move for the player, but the Craven Cottage side angered the Dons last season by signing Jack Grimmer under freedom of contract. That left Aberdeen with just £200,000 in compensation for a full back they believe was worth considerably more and Brown is hoping history doesn’t repeat itself with Fyvie.
They also had to settle for a cut-price deal when Scotland striker Chris Maguire moved to Derby County and all the Dons manager wants is a fair price for the players they have developed.
That’s why he believes Aberdeen must sell now to get the best return on someone predecessor Mark McGhee reckoned would be worth £10 million some day.
Brown said:“ Fraser is here at the moment, but I still expect him to be gone as things accelerate as the season approaches. That would probably be the preferred option for both parties and I must admit I thought he would be away by now.
“There is no animosity here – we have been very open with each other about the situation.”