The defender is being linked with the Blues.
"It's the first I've heard of it," Bruce told the Hull Daily Mail.
"There's going to be speculation about any player that's doing well and Curtis is doing well.
"I don't even have to bother with my owner with £6m. We don't want to lose our good players and that wouldn't even tempt us.
"I wouldn't even have to ask the question on it and that's the strength we've got."
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