Normally early negotiations for films are hidden away from public sight and we only get to hear about them when people are close to signing on the dotted line. However Vin Diesel is a man who like to share, so he’d let us know, via Facebook that, “Marvel has requested a meeting… no idea what for… haha, you probably know better than me…”
It’s pretty much begging for speculation as to what role they want him for. Marvel Phase Two movies Guardians of the Galaxy and The Avengers 2 have not gone into production yet, neither has the only confirmed Marvel Phase Three movie, Ant-Man, so theoretically it could be one of them.
Other projects in development include Doctor Strange, Black Panther, and, much further down the line, The Avengers 3. Inevitably much of the speculation has Diesel as the African chief of the Panther Tribe of the advanced nation of Wakanda, T’Chall, aka Black Panther. However at this stage it’s purely speculation.