The shooting guard, who has not played since rupturing his Achilles in April, scrimmaged for 30 to 45 minutes during the team's practice yesterday.
The head coach told ESPN: "Today was a good day. We'll see tomorrow how he reacts and everything, but today was a big step forward.
"We don't want to jump the gun. We don't know [if Bryant will play this week]. We'll see if he's able, but like I said, today, it all looks good.
"He's Kobe. Practice is going to be different for him than the game, but he controls the game and I didn't see anything he couldn't do."
The Lakers face the Sacramento Kings on Friday.