Chris Evans
From imdb trivia
"Chris Evans was originally cast as Evan McCauley, but had to drop out of the film due to scheduling conflicts, and was replaced by Mark Wahlberg."
Wonder what movie he had schedule conflicts with ? Lightyear? Gray Man?
Evans was born 1981 so ties in with opening set 1985 when Treadway is reincarnated (Wahlberg born 1971!)
Strangely the film was quite similar to Infinity War (the egg/Infinty stones, Bathurst/Thanos) and feels abit like it could be one of Evans' stream movies share