After Mar-Vell and the Avengers foiled Ronan the Accuser's plot to return the Earth to prehistoric times, Mar-Vell's existence was outed to the Earth's public, sparking a McCarthy-like witch hunt for aliens. Though the newly minted Alien Activities Commission demanded Mar-Vell, the Avengers sent him away to a private farm for his own safety. Unfortunately, the private farm was a trap set up by the Skrulls, leading to Mar-Vell's capture and return to space. In Skrull space, the Emperor Dorrek VII demanded Mar-Vell make a powerful Kree weapon for them.
Subsequently, the Avengers helped the Inhumans fight off a power grab by Maximus the Mad, who had enlisted help from the Kree to overthrow his brother Black Bolt. During the skirmish, Jones -- who had tagged along -- was captured and brought into Skrull space. The Avengers followed. As the Avengers clashed with the Skrulls, Jones was rescued by the Supreme Intelligence, who helped Jones unleash some latent mental powers. With these mental powers, Jones manifested projections of Golden Age heroes that attacked the Supreme Intelligence's usurpers, including Ronan, and restored the Kree leader's powers. He also sent a bolt across the universe that froze the Skrulls and allowed the Avengers to win the conflict, thus ending the war.
As such, it's easy to see that Jones was a critical part of The Kree-Skrull War -- so critical, in fact, that it would be difficult to imagine an adaptation without him. However, the Captain Marvel movie hasn't made any casting announcements that appear to fill such a role. At least, it hasn't cast a young white man that fits Jones' description, but the MCU hasn't hesitated to race- or gender-bend its supporting cast before. For instance, in 2016's Doctor Strange, the Ancient One was a Celtic woman (controversially) and Baron Mordo was a black man, where they were a Tibetan man and a white man respectively in the comics. Additionally, Spider-Man: Homecoming's Mary Jane was cast as a young black woman in Zendaya.
So saying, Marvel Studios has set more than enough precedence for race- and gender-bending Captain Marvel's cast of characters, which means Lynch's character could come as a surprise for fans of the comics. Further, Marvel Studios President Kevin Feige recently revealed that the MCU will tell more diverse stories moving forward. "The success of Black Panther, like a lot of things with the history of Marvel Studios, has just emboldened us to just continue doing that and to continue heading forward with that," he said just last month. Marvel could have already made good on this promise by casting Lynch as Rick Jones.