KG received a no-trade clause in new contract

There are now three full no-trade clauses in the NBA. Kevin Garnett is the third.
— Mark Deeks (@MarkDeeksNBA) September 19, 2012

No-trade clauses are very rare in the NBA. It was rumored that Ray Allen was also offered one by Danny. KG has said Boston is the only place he wants to play in. This clause gives him a little more piece of mind.

Thanks ThunWest for the link.