Toney, who has been racially abused several times in the past, shared a screenshot of the message he received on Instagram in October after he scored twice in a 2-0 win over Brighton & Hove Albion.
Northumbria Police and the Metropolitan Police launched a full investigation to trace the suspect and in January the man, named Neill, pleaded guilty to sending an offensive message.
"Neill was handed a four-month sentence suspended for two years for the online offence as well as a three-year football banning order ... ," the club said.
"The order forbids Neill from attending any regulated football match in the UK, which includes Premier League, Championship, League One, League Two and National League fixtures, as well as England home internationals."
Neill is also banned from travelling abroad to watch international friendlies, qualification matches and tournaments.
