The 25-year-old’s current contract with the Championship club is set to expire at the end of the season.
Reports have suggested that Heaton is ready to leave Cardiff after falling behind David Marshall in the pecking order.
“Tom is another ultra-professional and one who is very much a Championship goalkeeper,” said Mackay. “To have the two of them pushing each other has helped us.
“We will be talking to Tom’s representatives and I would love him to stay.
“I do understand the amount of football he would like to play, but that is the conversation I will be having with him.”
