Last season they also rejected a £50,000 insult bid for Danny by Wycombe.
Swindon may accept a higher offer, but don't want to sell players for less than they are worth, but may be forced to sell as they need the monet to pay the PFA, Inland Revenue, and others.
King said: "We don't want to go down the road of selling our best players. You have to build a team and not destroy it.''
