Earlier he was rumored that Vin Diesel would play the Vision, but now he is being rumored for Black Panther
A strange thing about him being Black Panther is his ethnicity and the black panther has always been an african based superhero in the Marvel comics and having Vin Diesel portray the character would really strike an impact on the character's nationality as well. Then he was rumored to voice Groot in Guardians of the Galaxy or Thanos in Avengers 2. Personally, the best character he is most suited for in the Marvel Cinematic Universe is Carl 'Crusher' Creel aka the Absorbing Man/
Yeah, based on his personality and his roles for being a tough brawler in many action packed films, Absorbing Man would definitely be the actor's best fit for the MCU, and maybe for the Masters of Evil in Avengers 2.
well to find out stay tuned