The Heat also is considering adding free agent forward Antoine Walker, possibly in a sign-and-trade deal with Boston, though no agreement was imminent.

Walker visited with Riley last week, and although a straight signing of the free agent is unlikely, the Heat could package Michael Doleac, Rasual Butler and its $1.9 million trade exception to Boston in exchange for Walker. That would allow Walker to sign for a starting salary of about $6 million, and the Celtics would not have to take on much salary in return.

Doleac is in the second year of a four-year deal that pays him $2.6 million next year, and Butler is in the final year of his contract and will make about $1.5 million next season."