Vin Diesel says Groot will battle this member of the Avengers

vin diesel,groot

Thanks to Cinema Blend.
"I know somewhere in the universe, you're gonna see Groot and Hulk battle. You can write it down somewhere, you're gonna see that poster: Groot vs. Hulk." - Vin Diesel, via Screen Junkies
The Avengers Member Groot Will Fight, According To Vin Diesel - CINEMABLEND