Gilbert Arenas' knee?

[MCS]

Agent Zero is off to a slow start in preseason, and there are some random semi-credible rumors that his knee isn't fully recovered. The way I see it, there are a few possibilities for how he will be affected this season.

(1) There is essentially no real impact, mountain out of large molehill, monsters under the bed.
(2) He is slowed by the knee early in the season, but plays through it and is back at full strength quickly.
(3) He plays the whole year, but not as well as expected.
(4) He misses a significant number of games (either early or late).

This is also a contract year and I think it's debatable how much and what type of impact that will have.