Charlie Mulgrew's agent has told Aberdeen to prove how much they want to keep the player.
Dons manager Mark McGhee revealed earlier this week that he was in talks with the full-back over a new deal, with his current contract expiring at the end of the season.
McGhee was hopeful that Mulgrew would accept their formal offer but the 23-year-old's representative, Kevin Drinkell, is not sure they have gone far enough.
Drinkell has urged the club to make Mulgrew a proposal he cannot refuse because he is perceived as such a valuable player
"We are now at the point of asking Aberdeen FC, just how much do you want Charlie Mulgrew to stay?" Drinkell said in the Evening Express.
"He is a player whose star is rising, and he is playing well."