The FA Cup fourth round is here and it starts with a tantalising encounter with out-of-form Manchester United travelling to out-of-form Derby County.

Derby County though have absolutely no pressure on them, with it all on Louis van Gaal's side.

To avoid even more pressure being piled on the under-fire Dutchman. Manchester United need to beat the Rams.

County have not won any of their previous five league matches, so taking a break from league action will be welcomed, with a chance to re-discover a bit of form to help them in their bid for promotion.

With no pressure on Paul Clement's team, they have a real opportunity to cause a huge upset and dump Man United out of the cup.

Here are THREE things to look out for in the Derby v Manchester United clash.....

1) Louis Van Gaal

Manchester United may have disputed rumours that van Gaal had offered to resign after the home defeat to Southampton, but the Dutchman is still under severe pressure to make United perform.

Losing to Championship side Derby would make his position almost untenable at Old Trafford, and would indeed increase demand from United fans for the club to end Louis van Gaal's reign as manager.

2) Wayne Rooney 

Rooney has come under increasing pressure for his performances this season, with the player looking like a shadow of his former self at times this season.

The England international has still scored 15 goals for United though, which is not bad for a player who is supposedly not performing.

Derby's defence will have to be on top form to alleviate the threat of Rooney.

3) Derby's form

Derby's form must be a concern for Rams boss Paul Clement, without a win in five games, however this weekend the form does not matter.

Derby can go out play with freedom and if they can produce the football that saw them go second in the Championship, they can heap more misery on to Manchester United.

Derby are fifth in the Championship and if they can beat United, it could re-ignite their promotion challenge.

Derby fans have your says.........Will you beat United on Friday night? What have you made of the recent slump in form? How far do you think you can go in the FA Cup? Leave your predictions and comments below!