Derrick Rose's lucrative endorsement deal with adidas cannot be undone, but the company can start to recover some money once the Chicago Bulls' star misses two-thirds of any given season, according to sources.

If adidas can prove that shoes sales gave been hurt, they can deduct some of the money they owe to Rose. It's uncertain what happened last year when Rose missed the season following ACL surgery.

Sales of the DRose 4 aren't expected to fall completely flat.

aaddidas agreed a couple years ago to pay Rose more than $20 million per year over a decade.