David De Gea's proposed transfer from Manchester United to Real Madrid collapsed as time ran out on Monday night.
The necessary paperwork was not lodged before the Spanish league deadline and United are understood to blame their Madrid counterparts.
Confirmation that two of the world's biggest clubs could not settle the deal led to much mirth on Twitter.
Here is a selection of reaction to the deal going belly up:
Spanish newspaper AS: "Now we are hearing that United did send the documents on time but in a format that couldn't be opened at the LFP. Windows 95?"
Footballer-turned-pundit Mark Bright responds to AS: "I mean, you can't make this stuff up....."
Former United striker Andy Cole: "Maybe the wifi went down?! Don't get why Madrid left it so late.."
Former Liverpool striker Robbie Fowler: "There's absolutely no chance that deal hasn't gone through if real wanted the player,relevant documents will miraculously appear #power"
Ex Liverpool and Manchester City man Dietmar Hamann: "How two of the biggest clubs who negotiate a deal for De Gea for weeks fail to get the paperwork done in time is beyond me."
Eamonn Holmes, TV presenter and United fan: "De Gea transfer hits problems ..... it's not as if they hadn't got time to prepare was it ?"
TV and radio presenter Georgie Bingham: "This De Gea story is just absolutely brilliant. Like a Carry-On movie."
Clowns to the left of me, jokers to the right....David de Gea stuck in the middle of Real and Man U -- http://t.co/HRns6OC1GJ— Mark Ogden (@MOgdenTelegraph) August 31, 2015
Ed Woodward has apologised for missing the David De Gea paperwork deadline, but he'd been chatting to an absolute scorcher on Tinder. #MUFC— Paddy Power (@paddypower) August 31, 2015
It is a statistic that fades with memories of goals in Champions League finals and countless match-winning interventions, but Cristiano Ronaldo was only able to muster 15 goals in his first two seasons as a teenager at Manchester United.