Will Iron Man in Avengers 4 sacrifice to bring back Infinity War's deaths ?

Recently, Ant-Man and the Wasp , the sequel to Marvel Studio's Avengers 3, has officially launched, revealing a number of interesting links to Avengers: Infinity War and Avengers 4 . The film has inspired fans to come up with more hypotheses about the content of the Marvel blockbuster debut next year.

As of right now on the internet there are about more or less than 14 millions fan theories — each posts a different idea on how in Avengers 4 will the deaths in Avengers: Infinity War can come back to life. The fans have agreed that time travel will be a factor , but there's still a lot of disagreement among the fans on Reddit on how  the plot line will turn out to be.

Robert Downey Jr. as Tony Stark/Iron Man in Avengers. Image via Twitter

The theories:

Nevertheless, to undone Thanos' snap, it is reasonable to think that one of the Marvel Strongest Hero would have to sacrifice him/herself for the universe or the story line. Here we have two theories from Two Marvel fans on which hero will sacrifice for the sake of the universe. They have the same idea on who, but different theories on how and why?

The first fan, Pluralizes proposes:

"After Infinity War, Tony has tied the knot with Pepper and soon after their son was born. But then, Ant-Man shows up and Tony discovered about time travel, so now Tony plans to reverse the snap of Thanos with time travel... Yet, this means change the current reality where he has his son.

After arriving on Vormir with Nebula guides them, they discover that a sacrifice must be made. In Infinity War we saw Red Skull with the skill of seeing everyone's soul as the Stonekeeper when he addressed Thanos as "Son of Alars", so maybe he will look into Tony's soul and learn that he is in a dilemma: sacrificing the current reality where he has his son to save half the universe.."

The second fan, Amian246 speculates:

"There is one big issue in the story line though: to acquire the soul stone, Tony has to sacrifice what he loves the most. The popular speculation is that would be Pepper; but what if  what he loves the most is himself? Throughout the MCU, Tony has always been a self-centered character, so will he give up himself to save half the universe?"

We'll find out when Avengers 4 available in theatres on 3 May, 2019.