However you look at it, it feels awkward, which is probably why the scene never made it into the final film. Still, the desire to include Apollo, and Carl Weathers, in the movie in some way certainly makes sense. It’s understandable that people would want to try. There’s just no good way to do it.
Article source: https://www.cinemablend.com/news/2468442/creed-ii-originally-brought-back-apollo-as-a-ghost