I'm pretty sure they will do the red hulk thing and banner saving the day then being locked up or something. OR Ross making himself into red hulk once they find where banner is hiding and him set out to bring the hulk in. RED hulk is very probable as a government tool. I don't think he would have made the main cast announcements if he wasn't playing a big role. Why bring the dude back from 5 or 6 movies ago to be a cameo.
Remember guys Hulk destroying Wakanda is going to be the building point to why the world wants these regulations in the first place. Not to mention whatever crossbones or whoever does to kill more innocents. So I think they had no real choice but to put banner in either being apprehended or having to be forcefully apprehended. So much damage was done with the hulk buster I think the world powers would be looking towards matching his power.
PS. I told yall butterfield was Spidey watch the deal be like 6 films so that will cover the kid up until he's 28 lol which is like phase 5. Which makes sense we will literally see the kid grow up into mature peter parker working at the Bugel by his 2nd or 3rd solo film.
Kid gon be 40 and still look like a transgender teen.
They picked the wrong dude period.