The former Wigan Manager Steve Bruce, now in charge of Sunderland, has shown an interest in bringing Cattermole to the Stadium of Light.
However Martinez stated: “I think the interest is something that Lee should be very proud of.
“But Lee is now focused on the new season with Wigan Athletic.
“You can always have interest but Lee Cattermole is not for sale, there is not even a price on his head.
“We are in a great position that means we don’t have to sell anyone to balance the books.”
