The 39-year-old from Gateshead was detained on suspicion of posting racist remarks about Ba.
Police said he had been arrested on suspicion of racially-aggravated harassment and then bailed pending further inquiries.
Northumbria police spokesman: "Police received a complaint about an offensive message posted on Facebook earlier this month.
"A 39-year-old Gateshead man has been arrested on suspicion of racially-aggravated harassment and has been bailed pending further inquiries.''