Doomsday isn't confirmed at this stage, but there have been manyrumors pointing towards Evans making another return to the Marvel Cinematic Universe for this

Brave New World star Anthony Mackie was recently asked what he's most excited about seeing in Avengers: Doomsday, but has the actor inadvertently dropped a spoiler about the MCU movie?

The spoiler-free set-up: Mackie’s character, a military veteran, counselor and former “Avengers” sidekick named Sam Wilson, has traded in his Falcon alter-ego (and his deep reservations) to finally accept the Captain America mantle.