Keldon has $1.5 mil of unlikely incentives, which he hasn't earnt (>-65 games + (a) DREB rate, (b) FT, (c) playoff games). A total of $6 mil for his contract over 4 years.
Tre has $520 833, unspecified, unlikely too. A total of $1 mil for two years.
Vassell will have $2 391 303 of unlikely incentives next season. $11 mil over his 5 year contract.
All of these are performance based incentives, which are classified as likely or unlikely, depending on whether it has been achieved during the previous season.