"As always, the main priority for the board of Birmingham City is our own football club and as such it is our job to ensure that we act in its best interests at all times," Brady told the Birmingham Mail.
"Should clubs wish to make an approach to us with regard to any of our players, we would ask that this is done in the correct and proper manner and not via the media.
"Norwich City have been aware of this fact in the build up to Martin's expiry at Norwich City. No proposal from Norwich has been forthcoming. Martin is a player with talent and a number of clubs, not only with the desire to sign him, but also the money, have contacted us.
"Should Norwich City wish to buy our player I suggest Glenn should just pick up the phone and call me."