It was just revealed at the Marvel Studios comic Con panel that the daywalker is coming into the marvel Cinematic Universe and will be played by Academy Award winner, Mahershala Ali.
We have an update on Mahershala taking on the role of they daywalker. A quote from Marvel Studios president and producer, Kevin Feige says that Marvel studios did not approach the Academy Award winner, it was actually the other way around.
The Mad Titan Podcast 