Pressure slowly starting to mount on Man Utd manager Louis van Gaal

Manchester United were, rightly, booed off the pitch following the conclusion of their grim goalless draw at home to PSV, which leaves the club's progression through to the last-16 of the Champions League hanging dangerously in the balance...

What happens next?

United's failure to beat the Dutch outfit under the glistening lights of Old Trafford means that they must now jet off to the home of Group B leaders Wolfsburg in two weeks' time, and get a result.

A win in Germany will send the Red Devils through, however if they fail to beat the Bundesliga side, and PSV win at home to rock-bottom CSKA Moscow, then they're out.

Meanwhile, if United lose and PSV win or draw, then they will also be sent home earlier. In short, Louis van Gaal's troops need to upset Wolfsburg at the Volkswagen Arena in order to guarantee their place in the knockout stages.

Group B Table

1. Wolfsburg - 9
2. Man Utd - 8
3. PSV - 7
4. CSKA - 4

Remaining Matches

• PSV v CSKA
• Wolfsburg v Man Utd

Where are the goals?

United have been heavily criticised this season for their frustrating failure to score goals, with a dull defensive approach favoured over their more traditional eye-catching attacking style, which was prevalent under Sir Alex Ferguson.

The goal-shy club have now failed to find the back of the net in four of their last seven games; four of which have painfully ended 0-0. The Red Devils may be 2nd in the Premier League but they only have 19 goals to their name; nine less than league leaders Leicester, and the lowest of any team in the top-7.

Is Louis van Gaal under pressure?

A little bit. It's difficult to completele condemn a manager whose side are 2nd in the league; a point ahead of rivals Man City and Arsenal, while they've accumulated nearly double the amount of points of defending champions Chelsea.

However, lifeless performances like the one on Wednesday night certainly don't help the Dutchman, who is slowly coming under-fire in the Premier League Sack Race.

Yes, the former Holland manager is currently a whopping 90/1 long shot (Paddy Power), but circumstances change extremely quickly in football - just ask the under-fire Swansea boss Garry Monk - and an early exit from the Champions League in a fortnight's time would spell disaster, resulting in LVG's Sack Race odds plummeting.

'Go back to Holland & retire...you're destroying our club!' An #mufc fan lays into LVG. https://t.co/HfiMoEJ3iN pic.twitter.com/sEwny18ZhR

— BBC 5 live Sport (@5liveSport) November 26, 2015