Perform and get paid.
The clause, based on playing time, could have been a de-escalator, by as much as $1.6 million, if the 29-year-old couldn't stay on the field.
Jennings and Charles Tillman combined to form one of the best cornerback tandems in the NFL last season. While the escalator means Jennings' cap number will be $5.1 million (after his roster and workout bonuses), given his play, it is a number the Bears should be happy to pay.
Follow Kevin Patra on Twitter @kpatra.