David Moyes has found himself under increasing pressure since his arrival at the Premier League champions, and his short comings in the transfer market during the summer have so far looked costly.
United have already suffered three Premier League defeats, two at the hands of bitter rivals Liverpool and Manchester City, whilst their only (overpriced) signing of the summer Maraoune Fellaini has struggled to settle.
Moyes knows the pressure will be on in January as he looks to start putting his own stamp on things at Old Trafford, and widespread reports suggest there will be money to spend.
It is no secret the Manchester United boss is looking to strengthen the midfield, particularly in the centre and wide positions, whilst a new centre back and left back is also thought to be on the former Everton bosses shopping list.
But as Moyes will have discovered only too well since taking over the biggest club job in England, everything done as Manchester United manager comes under intense scrutiny, and the media constantly linking the champions with every player under the sun will not prove helpful.
Here, we have gone through all the various names being linked with a January switch to Old Trafford, and determined the five most unlikely and why.