Happy to lend out Bruce/Hulk also, but no worries if not. You're welcome to mention him in passing if it's pertinent to an OOM/whatever too, but you don't need him for actual threading.

He won't be through Avengers canon until Spring, probably - or at least early next year, depending on Uni deadlines. But I don't mind if he and Steve meet before that, as long as nothing/very little of actual canon is mentioned to him. He's well aware of Captain America, obviously, though he doesn't know he's alive, so it wouldn't be like a completely blank-page meeting.