Sporting Lisbon winger Carlos Mane is attracting big Premier League interest.A Bola says Manchester United have joined at least four Premier League rivals in tracking the teen.

Mane is understood to have been observed by Manchester United during his Sporting Lisbon B side's second division win over Olhanense last weekend.

Liverpool, Chelsea, Manchester City and Tottenham are also following the 19 yera-old's progress this season.