Okay, so there’s a little bit more to this Jeremy Renner Mission: Impossible story
Jeremy Renner is still open to returning to the Mission: Impossible franchise, but he had to protect his character

Recently, Jeremy Renner said he would be happy to return to the Mission: Impossible franchise. He only left, Renner explained, because filming took too much time away and he wanted to be there for his kid. M:I was filming around the same time as his Marvel commitments, so it makes sense that Renner would have to give something up in order to achieve a better work-life balance. But the story doesn’t quite end there.
The production did try to bring Renner on for Mission: Impossible—Fallout. “I remember they tried to bring me over[seas] for a week so they could kill my character, and I was like, ‘No, you don’t get to do that. You’re not going to drag me over there and just kill my character,’ like, get out of here!” Renner says on a new episode of the Happy Sad Confused podcast.“If you’re going to do this and you’re going to use my character, you’re going to do it right.”