The newest rumor out of Deadpool 3 is that Daniel Radcliffe has joined the movie in a “secret role.” Many fans have speculated that he will play a more accurate portrayal of Wolverine, at least in terms of height and stature. Just like John Krasinski played Mr. Fantastic in Doctor Strange in the Multiverse of Madness, the MCU could be playing around with different actors playing an alternative iteration of a popular superhero. However, this might not be the best for Deadpool 3. Not only would this take away from Hugh Jackman’s return as the character, which should be the main focus, but it would also take away a prime candidate to play the Marvel Cinematic Universe’s real Wolverine when the time comes. It also could face the same consequences that plagued Krasinski's performance as Mr. Fantastic -- rushed and only used for fan service.
Source:https://www.cbr.com/deadpool-3-daniel-radcliffe-wolverine-misstep/