Greg Oden has been told to rest his knee after being diagnosed with swelling, having returned to practice earlier this week.

The Miami Heat center, who has not played an NBA game in over three years, was waived by the Portland Trail Blazers earlier this year following a string of injuries.

The 25-year-old told CBS Sports: "I'm fine. It's been three years, three-and-a-half years for me, so a little bit of swelling. As long as there's no surgery, I'm OK. It's just taking its time. It's going to be a long season, and I'm going to get there. It's just one day.

"I was hoping it didn't [swell], but it did. What can I do about it? The best thing I can do is get it back down and get back out there and figure out what I can do to get out there and not have it swell again."

Oden was the top pick in the 2007 Draft.