When Harrison hurt his knee he burst the bursa sac."What is a bursa?Every person has hundreds of bursa scattered throughout the body. The function of a bursa is to decrease friction between two surfaces that move in different directions. The bursa can be thought of as a Ziplock bag with a small amount of oil and no air inside. Imagine rubbing this bag between your hands; movement of your hands would be smooth and effortless. That is what a bursa functions as--a smooth, slippery surface between two moving objects. You tend to find a bursa at points where muscles and tendons glide over bones. Without the bursa between these surfaces, movements would be painful."Last I heard, the liquid that entered the knee when the sac burst was still around and hadn't be re-absorbed into the body. This, I would assume, is causing some discomfort and swelling.As RaiderNation said, they ahve the #2 spot locked up, so there's no need to rush him back.People can say what they want about him needing practice reps, but IMO, with all the work that Harrison and Manning put in, I really don't think it'll take much time at all before he's ready to go. The silver lining for the Colts here, is that they're getting a really good look at Anthony Gonzalez and his confidence should be quite high going into the playoffs. With that D and a full cadre of WR's (should reports that Harrison will be available for the playoffs be valid), Indy is going to be a nightmare for whoever they match up against.I think the demise of Harrison is being overstated in many leagues and Harrison will be severely undervalued next season in re-drafts. In a dynasty league if you can get him cheap, do it. He should have at least a couple more solid years in him, but with this injury and his age many dynasty owners may be looking to get rid of him. If I had a late first round pick in a dynasty league, I'd give serious consideration to trading that pick for Harrison. I don't expect any rookie WR drafted this year (that you'd get at the bottom of the 1st) to equal or surpass Harrison's production in the 2008/2009 season.