Former Florida State power forward Alexander Johnson, who played for the Memphis Grizzlies last season, has agreed to join the Heat and will sign a contract today, Miami-based agent Jason Levien said.

The Heat has been searching for depth at power forward behind Udonis Haslem because Antoine Walker will be needed to play a lot at small forward this season and Wayne Simien is recovering from knee surgery.

Johnson, 6-9, is expected to sign a two-year, $1.5 million contract, with the second year at the Heat's option.