Juventus staged a remarkable comeback against Real Madrid in the Champions League tonight – and it left Manchester United fans everywhere with their head in their hands.

Having lost the first-leg of their quarter-final 3-0 in Turin last week, everybody thought Juve were pretty much dead and buried, and tonight’s return match in the Spanish capital would be nothing more than a formality.

OH MY WORD! 😱

Keylor Navas with a howler!

2' ⚽️ Mandzukic
37' ⚽️ Mandzukic
61' ⚽️ Matuidi pic.twitter.com/D2aJd3lVZQ

— Football on BT Sport (@btsportfootball) April 11, 2018

However, a stunning first-half brace from Mario Mandzukic turned the tie on its head, and in the 61st minute, Blaise Matuidi scored a rare goal to level the aggregate score at 3-3.

But Matuidi had Real goalie Keylor Navas to thank for the all important third goal, after the Costa Rican shot-stopper somehow fumbled a shot and dropped the ball at the feet of the French midfielder, who simply tapped the ball into an empty net.

Those remarkable scenes have left United supporters terrified that David de Gea will once again become a Real Madrid target this summer:

Trust me @realmadrid, you don't want De Gea. He's shit. Courtois much better. #RMAJUV

— 🔴⚪⚫ (@AinsleyMUFC) April 11, 2018

Hey @ManUtd, please renew David De Gea’s contract RIGHT NOW!! #MUFC

— Daniel Brits (@DanBrits87) April 11, 2018

Keep your eyes off De Gea Real Madrid.

— Stanley Chow (@stan_chow) April 11, 2018

yeah De Gea is gone 😂😂

— Thabang (@_TheBang_) April 11, 2018

Get De Gea ties to a new contract immediately, Madrid are defo coming knocking after that #mufc #RealJuventus #championsleague

— Kas (@kassaleh) April 11, 2018

After that horrific goalkeeping error , can visualise the RM president dialling up De Gea's agent !

— Manmohan Mehta (@Mannaboutown) April 11, 2018

Ffs Real Madrid might want a new keeper after Navas fumbling and that's gonna start the De gea transfer saga all over again #FireUpTheFaxMachine

— Paul Irwin 🐝 (@bluedogspaul) April 11, 2018

Now I know why Real Madrid want David de gea so bad #davesaves

— mark thornton (@thornbolt) April 11, 2018

@ManUtd extend @D_DeGea contract now !!!

— Aamir (@AamirMakkan) April 11, 2018

De gea price right now £1Billion

— el negrito de ojos claro(Trap Cartel) (@Ollatomiwa) April 11, 2018

@ManUtd Unplug all the phones tomorrow, Madrid will be coming after DeGea like nobody's business.

— GMan26 (@man26_g) April 11, 2018

You know Real Madrid are coming for De Gea … Again

— Flaco? (@_FLAC0) April 11, 2018

@ManUtd do something about de gea's contract now

— Michael Pryde (@iampryde) April 11, 2018

EXTEND DE GEA'S CONTRACT YOU FOOLS@ManUtd

— Tabish (@10tabish) April 11, 2018

What do you make of the reaction? And the mistake by Navas?

Let us know in the comments section below…