Frank Dell'Apa reportsRasheed Wallace is not expected to make a decision on the Celtics' offer of a mid-level exception contract for at least a week. The Celtics sent Ray Allen, Kevin Garnett, and Paul Pierce, along with president of basketball operations Danny Ainge and managing partner Wyc Grousbeck, to Wallace's suburban Detroit home for a three-hour meeting Thursday. Wallace will meet with other teams next week -- he is...