The simpler option for the reigning champions, as opposed to a Melo-sized blockbuster deal, might prove to be a smaller swap in which the Cavaliers absorb the salary of a veteran point guard into their $4.4 million Anderson Varejao trade exception that expires Feb. 20. Sources say one vet known to interest the Cavs — one who possesses a salary that would fit into that exception — is Utah’s Shelvin Mack at $2.4 million