It’s still a wonder why Kenyon Martin sat on the free-agent market for so long this season. Why the Celtics, a team lacking a gritty big outside of the ailing KG, remains a mystery. K-Mart told the Daily News that he didn’t come close to signing a contract with Boston: “The Celtics could use a player like Martin but never made an legitimate offer. ‘I didn’t come close at all,’ Martin said. ‘They didn’t offer me anything, so it wasn’t close. I didn’t talk to them per se; my agent did. It didn’t happen, so it doesn’t matter at this point.’”