The Wizards, sources said, quickly rebuffed Cleveland's offer of Wally Szczerbiak's $13.8 million expiring contract for former All-Star forward Antawn Jamison. One source with knowledge of the Wizards' thinking said Tuesday that team president Ernie Grunfeld is determined to continue resisting interest in Jamison and Caron Butler because the club has renewed hope that injured starters Gilbert Arenas and Brendan Haywood will play in a small handful of games before the season ends, affording the Wiz an opportunity to evaluate the full team they hoped to field this season.