Free agent big man Hassan Whiteside hasn't appeared in an NBA game since April 2012, but is drawing some attention from NBA clubs, according to Alex Kennedy of HoopsWorld. Kennedy tweets that the Knicks, Bucks, and Heat have expressed interest in the former Sacramento big man.

Whiteside, 24, was drafted 33rd overall by the Kings in 2010, but only appeared in 19 games for the club before he was released. The seven-footer spent most of last season in the D-League, making the most of limited minutes for the Sioux Falls Skyforce and Rio Grande Valley Vipers. In just 11.8 minutes per contest (36 games), Whiteside averaged 6.6 PPG and 5.3 RPG.

As our 2013/14 roster counts show, New York, Milwaukee, and Miami all have 15 players under contract, but for the Knicks and Heat, not all of those deals are fully guaranteed, meaning there could end up being roster openings. The Bucks, on the other hand, are carrying 15 guaranteed contracts, so if Whiteside receives multiple camp invites, he may opt for a situation where he has a better chance to earn a roster spot.