Chris Grant is more than pleased by Andrew Bynum’s commitment to rehabilitation and conditioning.

Bynum is recovering from a series of knee problems that forced him to miss the entire 2012-13 season.

"I have absolutely been blown away by his approach," Grant said. "Literally, [from] the day we signed him, the next day he was here and he has been here every day but Sunday working. During this rehab, this progression, obviously we have a very detailed plan that he's been on and he's following it to a T."

So far this offseason, the Cavaliers added Bynum, who could return to All-Star form if healthy, Earl Clark to play both forward spots and Jarrett Jack to provide depth behind Kyrie Irving.

"Of whatever, my 20 years [in or around the NBA], this has been the busiest offseason I've ever been involved in," Grant said. "I haven't had an opportunity to step away. ... We're excited. We've got a lot of new significant pieces, so we're excited to see what it looks like when we step out there."