This kind of question about african pre-columbus contact pops up often. They are each time thoroughly debunk and no evidence exist for such events
We have from our FAQ:
Is There Any Evidence That Moors Reached The Americas Before Columbus? by /u/LoneGazebo
Did Africans reach the Americas and found the Olmec civilization, as outlined in They Came Before Columbus? by /u/CommodoreCoCo
also check out
this thread by /u/CommodoreCoCo
and also this one
and this one by u/400-rabbits
I messed up, I meant african american*