Here’s an excerpt from a July 2018 article published on OverTheCap:
In March [Todd Gurley] will not only guarantee his 2019 salary but also his 2020 roster bonus of $7.55 million. Once that happens the cost to release Gurley in 2020 would be over $20 million on the cap. Because this is the final league year of the CBA there is no June 1 provision so they would need to absorb that full number if they were to cut him.
This is the first contract that seems to have some acknowledgement of a potential work stoppage in 2020 based on the roster bonus language.