The Lakers start training camp Monday with 19 players under contract.
Huertas hopes to make the team as a veteran backcourt presence. Upshaw needs to prove he's moved beyond issues that derailed his college career.
After January shoulder surgery, Kobe Bryant was finally given total medical clearance near the start of his 20th season.
New York Knicks President Phil Jackson said he expects Bryant to play beyond the coming season, though not necessarily with the Lakers.
While Clarkson wanted to play overseas for the Philippines in the FIBA Asia Championship, the schedule just didn't work for the Lakers.