Kevin Garnett celebrates in front of the Boston crowd after the Celtics captures the 2008 NBA title. Garnett has spent the past five seasons in Boston but is contemplating retirement. The Celtics, meanwhile, have the No. 21, 22 and 51 pick in Thursday’s draft and are targeting a big man who can rebound and score in the low post, according to SI’s Sam Amick. (Bob Rosato/SI)
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