From the HEAT's press release:
The Miami HEAT announced today that they have signed forward Juwan Howard for the remainder of the season. Per club policy, terms of the deal were not disclosed.
Howard was previously signed by the HEAT to a 10-day contract on March 2 and then re-signed to a second 10-day contract on March 12. He has not appeared in a game for Miami this season, but has appeared in 85 games with the HEAT over the last two seasons averaging 2.1 points, 2.0 rebounds and 9.2 minutes while shooting 40 percent from the field. Additionally, he appeared in 11 postseason games during Miami's 2012 NBA Championship run, totaling 17 points, 10 rebounds and an assist in 60 minutes of action while shooting 4-of-9 from the field.
The former NBA All-Star was originally signed by the HEAT as a free agent on July 20, 2010 and then re-signed on December 9, 2011.