VIDEO : There's A New 'Avengers 4' Theory

Many are speculating original Avengers characters will die in Avengers 4.
Comicbook.com asks what if they were to travel to the past and stay there?
A new theory speculates that Captain America will travel back to the past.
The Avengers will discover the ability to travel through time while trying to undo Thanos' deeds.
Should the opportunity arise, Cap will almost certainly wish return to his own time.
Whether or not he decides to remain in the past is unknown.