Henry Cavill's DCU exit opens up a perfect MCU role for him
Henry Cavill's departure from the role of Superman in the DCEU is timely, and he may be introduced into the MCU as an important multi-MCU superhero.

Henry Cavill's exit from the role of Superman in the DCU is the perfect opportunity for him to make his MCU debut as a multiverse hero. Despite ideal casting, comic-book costume designs, and a story brimming with potential, Warner Bros. The DCEU cinematic universe is getting a major reboot under the reign of James Gunn and Peter Safran. As a result, Superman actor Henry Cavill will no longer don the cape in future DC films. While this is disappointing for the DCU, it also means that Cavill will be free to take on other roles in different franchises.
Henry Cavill's future Warhammer 40,000 project is the start of a new era for his Hollywood career, but it might not be the only major IP the former Superman actor could join. Actors like Idris Elba, J.K. Simmons, Willem Dafoe, and Michael Keaton have no problem switching between MCU and DCU movies in short order, and Henry Cavill can do the same. In fact, there's one particular Marvel character with great potential for the MCU that fits Henry Cavill's talents: Captain Britain.
Why Henry Cavill Would Make The Perfect Captain Britain

The MCU could take advantage of Henry Cavill's charisma, acting skills and physical prowess with Brian Braddock aka Captain Britain, Powerful heroes with ties to Marvel magic and the multiverse. As a strong, fast, flying superhero constantly saving the planet, Captain Britain could put Henry Cavill's wasted superhuman potential to good use in a fully fledged cinematic universe. But Captain Britain could also provide Cavill's performance with new creative possibilities beyond Superman's idealistic personality, as Brian Braddock is a more troublesome, reluctant superhero whose powers depend on his confidence.
Henry Cavill has played Captain Britain-like characters in some respects, including the haughty but dignified Charles Brandon in The Tudors, the noble warrior Theseus in Immortals, and From the Uncle Napoleon Solo, the suave agent of The Man. What's more, two of Henry Cavill's most famous characters, the DCU's Superman and the wizard Rivia's Geralt, would both fit perfectly into Captain Britain. In fact, Henry Cavill was such a good fit for Brian Braddock that Cavill himself expressed interest in playing Captain Britain.
Why The Time Is Right For Captain Britain In The MCU

With Henry Cavill officially playing Superman, the MCU is free to give him a character arc in the various Captain Britain movies and Disney+ shows. Unlike Superman, Captain Britain doesn't quite carry the burden of the entire franchise The burden is on his shoulders, but he still plays a key role as protector of the main Marvel Universe. Henry Cavill's exit from the DCEU and The Witcher just in time for the climax of the MCU multiverse saga means he could easily appear as Captain Britain in an upcoming multiverse-themed MCU release.
It was Captain Britain who introduced the Captain Britain Legion in 1983's The Daredevils #6, helping to solidify the concept of the multiverse in Marvel Comics. Maybe Captain Britain can also understand the chaotic rules of the MCU multiverse in Phase 5 or 6 before Avengers: Kang Dynasty and Avengers: Secret Wars. Additionally, Brian Braddock founded the mutant team Excalibur, while his sister and Captain Britain's successor, Betsy Braddock, is none other than Psylocke from the X-Men. With multiple duties, connections to mutants, and the right timing, Captain Britain seems like the perfect superhero role for Henry Cavill to follow Superman.