Newcastle United striker Demba Ba has accepted a bet with a Manchester United fan on social networking site Twitter.
The Magpies host Manchester City this Sunday with the Citizens leading the Premier League title race on goal difference.
Posting on Twitter, a Red Devils fan tweeted the Senegal striker: "you score the winner against city and I'll get you on the back off my manchester united top # dealornodeal # BA19"
Ba then replied: "Deal."
Newcastle are currently fifth in the Premier League.