The most straightforward approach Marvel could take to bringing back Chris Evans is by continuing where Endgame left off and including more Old Man Cap to Falcon and the Winter Soldier.
The Falcon and the Winter Soldier align the most closely with Captain America and if there’s one place where a return may be merited, this series could be the right place.
Old Man Cap seemed quite content to be on his way by the end of the 2019 Avengers film and since the first season has already wrapped and is coming this March.
This story will pick up with the upcoming Disney+ series named after the pair as they fight off Zemo.