From an article on ESPN.com about 32 NFL players who could use a fresh start (link), they suggest Marquise could prepare for the 2020 Summer Olympics in Tokyo if the 49ers cut him loose.
I follow MG's instagram acct. He and his wife have had some awful misfortune when having babies. His wife is 2 weeks away from giving birth let's hope that they have healthy happy baby.
I don't know what happened in the London Olympics. He was the favorite going into the games and then he scratched. These Olympics will be in September if he goes out I hope his team allows him to compete.