Manchester United are believed to be considering a shock move to sign Liverpool midfielder Joe Allen, who is valued at about £20million, Daily Star reports.

Despite a flailing defence, Louis van Gaal sent scouts to watch the Welsh international during the Reds 3-1 defeat to Manchester City.

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The 24-year-old’s place in the squad is still under question, as Brendan Rodgers has a host of new midfield signings all competing for limited spaces in the middle of the park.

Allen left an impression on Van Gaal when Wales fell to a 2-0 defeat against the Netherlands back in June, when the Dutch boss was still in charge of the national squad.

With Michael Carrick, Marouane Fellaini, along with new signing Ander Herrera all out with an injury, the 63-year-old manager has urged Ed Woodward to try and acquire his services.

Although Darren Fletcher and Tom Cleverley are both available, their recent displays have not helped their bids to earn a place in the side.