Steve Bruce has yet to receive a single enquiry for Matthew Upson, or a 'serious offer' for David Dunn.
Speculation has suggested that Upson will leave Birmingham before the end of the month, but Bruce is adamant that he will not part with the defender for less than he is worth.
There has been no interest in Upson so far and Bruce believes Premiership clubs are wary about bringing in a player who has just returned from a lengthy lay-off.
"I must have read that Upson is going to 12 different clubs but I have not had a single phone call from a manager and neither has Karren (Brady - managing director)," Bruce told the club's official website.
"If he's worth £6million now he's worth £6million in the summer and we won't be selling Matt Upson on the cheap.
"Clubs usually have their big budgets in the summer, but if somebody like Chelsea came and offered us £10million in the summer, we all know what the score is.
"I also think that most big clubs will look at Matt's situation and see that he's just recovered from his injury, and I'm sure they'll be monitoring his progress over the next two or three months to make sure he is 100 per cent fit if they are going to spend big money on him."
Dunn has been linked with a return to former club Blackburn and Bruce is ready to listen to offers, but he is looking for a good price.
"He is fit now so it might be in our best interests to get a few quid and spend that on somebody else," Bruce explained.
"As long as we get the money we want for him it will be amicable, but we've had no serious offers for him."
Peter Till, meanwhile, has joined Grimsby on a permanent basis.
The winger moved to Blundell Park on loan in November after failing to establish himself in the Birmingham side.
He has so far made seven appearances for The Mariners and has impressed sufficiently to be offered a two-and-a-half year deal.