Anderlecht midfielder Lucas Biglia knows Manchester United are watching him.

Argentine sources say United manager Sir Alex Ferguson has been following Biglia's for the past 12 months.

United were expected to bid for the midfielder at the end of last season, but no offer was ever tabled.

Now, with Darren Fletcher out indefinitely and his midfield lacking energy, Ferguson has revived his pursuit of Biglia.

The midfield schemer, formerly of Independiente, is tied to Anderlecht until 2015 and has a buyout clause of £6 million.