"I've had a conversation with Steve Bruce and I'm not going to deny that," Mowbray told the Birmingham Mail.
"But the bottom line at this moment is that Birmingham are only offering exchanges of players and they're players I don't want.
"If any club, not just Birmingham, are interested in Paul Robinson they know where we are.
"Paul has expressed his intentions to me and we'll see how things develop.
"But, as we've said, no one will be leaving our football club on the cheap.
"Full-backs are very difficult to find and Paul Robinson is a very good left full-back."