All teams in Group B will have three points if the results stay the same.

Is the difference between the two Manchester sides in Europe that when United went behind you still backed them to win - but City...?

Max Baggins-Craig: City just terrible, they're all over place, speaks volume for Premier League's value and status - bearing yesterdays results in mind. 

Bibz: You know English football is in decline when Man City is losing to the worst German team in the Champions League. 

Barry Fryer: Sterling's waste of money, overated and out of his depth. 

Like chalkboards? Don't like Manchester City? Then you're going to love the snazzy graphic below which illustrates Monchengladbach's opener.

What this doesn't show, however, is City left-back Aleksandar Kolarov being dragged inside to allow Julian Korb (27) the space to pick out scorer Lars Stindl (13). Nor does it show Stindl being allowed the freedom of the away penalty area.

Image source, Opta

Chris Waddle
BBC Radio 5 live at Old Trafford

"Manchester United now enjoying more space with Wolfsburg coming on to them. I think the visitors will be making a few changes soon."

Now's the time for City's £135m front three to come to the party. They had several good openings in the first half but this is playing out all too familiarly for City fans in Europe.

Still over half an hour to go. Only Jesus Navas on the bench as a first-team attacker though.  

Image source, EPA

Conor McNamara
BBC Radio 5 live at the Borussia-Park Stadion

"You have to say this goal has been coming. It was a lovely cutback and Lars Stindl has finished it. Joe Hart had been brilliant to that point but he can't prevent a goal this time."

Image source, Reuters

Can Manchester United hang on to this lead? They have played well tonight, in general. Their finishing hasn't been great but Chris Smalling did well to stretch and fire that one in.

Image source, Reuters

Chris Waddle
BBC Radio 5 live at Old Trafford

"Wolfsburg have fallen asleep, they thought they had cleared it but United were alert to the second ball. A nice flick from Juan Mata and Chris Smalling was there to finish it off."

Maybe get back to us at full time of that one Russell.

Image source, PA

What a game this is.

First City attack well, Aleksandar Kolarov's cross is not good. Then Monchengladbach win a corner, it's headed down and fired in on goal but well blocked by Fernandinho. Saved a certain Joe Hart save.

City then break four-on-three but David Silva can't find a man. Great 0-0!

Tom Robertson: Raheem Sterling out of his depth at this level. His only attribute is his pace and running at defenders which he isn't doing. 

The Oracle: Sterling is an impostor and he continues to show himself up every time he wears the shirt. Wish we had bought Downing. 

Richard Holliday: Why is there any debate over Joe Hart? What more does he have to do to be ranked up there? He's a big head but a game saver.

Indeed they have, and only a great recovery clearance from Matteo Darmian prevents Bas Dost from getting a tap-in.

Two very, very good games to watch tonight. It's erasing Watford-Palace from my mind a minute at a time...

Chris Waddle
BBC Radio 5 live at Old Trafford

"Wolfsburg have clearly been told to have a go at Manchester United early on in this second half. They have really come out the traps."

Joe Hart again! He is denying Raffael time and again, more poor defending allows the Brazilian a run in on goal but Hart dives away to save brightly. Without Vincent Kompany this City side is a shambles. 

Kyle Utterson: How bad does Manchester United's opening day loss look now with CSKA 3-0 up on PSV - plus they have also missed a pen too. 

Ryan Paul: It has to be said, Man Utd's only weakness this season has been finishing more of their chances. They look really dominant. 

Joel Hudson: What's wrong with United's finishing? Rooney and Memphis should have put those chances away!

Yaya Toure is off at the break, he is replaced by Fernando. 

Under way. Ashley Young is on at left-back, Antonio Valencia off.