Barclays Premier League leaders Manchester United are plotting a January bid for Charlton Athletic left-back Morgan Fox, following the broken leg sustained by Luke Shaw earlier this month, reports the Sunday Mirror. 

22-year-old Fox is a product of the Addicks' youth academy and, since graduating in 2012, the former Wales Under-21 international has gone on to make 42 appearances for the South East London club, as well as gaining seven outings whilst on loan at Notts County in the 2013/14 season.

Fox has started every Sky Bet Championship game for Charlton Athletic this season and scored his first goal for the club in their 2-0 home win over Queens Park Rangers on the opening day of the season.

Charlton are keen to keep hold of their promising left-back and are rumoured to be piecing together a new contract offer for the newly called up Welsh international, in the hope of fending off interest from Louis van Gaal and his table-topping Premier League side.

It is also believed that the young left-back is attracting interest from other top-flight clubs, with Aston Villa, West Ham United and Newcastle United all thought to be keeping an eye on the talented defender.

The Addicks have seen their form and league position drop drastically in recent weeks.

After going unbeaten in their first four games, winning two, Guy Luzon's men are now without a win in their last five, losing four, and as a result have seen their league position drop to 17th, following three league defeats on the bounce - the latest a 2-1 defeat away at Cardiff City on Saturday.

Charlton fans... what do you make of the news? How desperate are you to keep Fox? Can he make the massive step up if Manchester United came calling? Let us know your thoughts and opinions in the comments below!