Manchester United are reportedly looking at the Belgian market for a new midfielder with the Premier League giants sending scouts to watch Royal Antwerp midfielder Mandela Keita. The Red Devils regularly kept an eye on Royal Antwerp during the first half of this season. Arthur Vermeeren, the teenager who helped end the club’s 66-year wait for a top-flight title, certainly had his fair share of admirers at Old Trafford before sealing that January move to Atletico Madrid. But, while running the rule over Vermeeren, it appears that one of the 18-year-old’s Royal Antwerp team-mates also caught the…