This has really set the cat among the pigeons.
No one gave Man United a real chance once Ole Gunnar Solskjaer named a Man United side with Fred, Scott Mctominay and Andres Periera in midfield.
But after just two minutes of play Romelu Lukaku was sticking the ball into the back of the net to hand United a lifeline in what could be a momentous night.
Thilo Kehrer played a sloppy pass across the back four without looking up to see Lukaku lurking behind Thiago Silva.
Time slowed down as the Belgian went through the gears and burst onto the ball with only Gianluigi Buffon to beat.
With the stadium, and every Man United fan, holding its breath Lukaku latched onto the ball but his first touch saw the ball bobble forward off his right foot.
United fans had seen this chance disappear a hundred times before.
But not this time.
After scoring twice at the weekend Lukaku had confidence flowing throwing his veins and with Thiago Silva busting a gut to get a challenge in, he calmy took control of the ball and conjured a brilliant finish for a crucial away goal.
He swept the ball past Buffon like Ronaldo in his prime and then had the speed to catch up with it to tuck it away from a tight angle.
It was exactly the start Solsjkaer would have been hoping for.
Lukaku has taken a lot of criticism for his first touch, although this could have bobbled away from him, he real composure to finish here.
Unfortunately for United 10 minutes later Kylian Mbappe was crossing for Juan Bernnat to tap home and level the scores.
Mountain to climb.
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