Mowbray is worried about winger Aiden McGeady leaving Celtic in the January transfer window.
Former Celtic boss Gordon Strachan has been linked with moves for Gary Caldwell, Scott McDonald and Barry Robson in order to revive Middlesbrough’s promotion ambitions.
“Every player has a price and if someone wants to offer Manchester City-type money for a footballer then we would listen,” said Mowbray.
“But, at this moment, no-one will leave if it’s not beneficial to our football club. They will only leave for footballing reasons.
“If nobody wanted any of my players then it would suggest that I don’t have any good ones.
“But people can speculate all they like about individuals. Nobody will be going from Celtic Park on the cheap, and if anyone is sold I know I’ll get the money back to plough into the team.”
“Aiden is important because of the emphasis I have on wide players,” Mowbray added.
“He has talent. Regarding Aiden, there are no issues as his contract has years to run. It’s not even a question as far as I’m concerned.”
