Seyi Olofinjana: "I have read that Stoke are interested in Martins.
"He is a very good striker who would certainly improve our attack. I hope he joins us."
Martins arrived in England in August 2006, after Newcastle shelled out a reported £10 million to bring him from Inter Milan.
Media reports have suggested a fee of around £6.5 million is being muted by the clubs involved in the chase for Martins.