Manchester United have sent scouts to watch versatile Racing Genk star Kalidou Koulibaly, according to the Daily Mail.
The 6ft 5in centre-back was a reported target for local rivals Manchester City last year, but went on to sign a four-year deal with the Belgian Pro League outfit in June 2012.
Koulibaly can also operate as a defensive midfielder, and is being lined up by Red Devils boss David Moyes as a potential January addition to his Old Trafford squad, as he looks to strengthen his backline, following a difficult start to the 2013/14 campaign.
The former Metz youngster is highly rated in his native France, having featured 11 times at U20 international level, though the 22-year-old is yet to receive a call-up to the full national team.
Moyes has been criticised for failing to significantly add to his Manchester United squad during the summer, with Marouane Fellaini the only notable arrival.
The former Everton midfielder joined the reigning Premier League champions in a £27.5million deal on transfer deadline day, and could be joined by the promising Koulibaly in January, should the Frenchman impress United scouts.