David de Gea's proposed transfer from Manchester United to Real Madrid has stalled after the relevant paperwork was received 28 minutes after Monday's European transfer deadline, Sky Sports understands.La Liga has confirmed that it did not receive the relevant documents for the agreement by its deadline of midnight on August 31 and Spanish newspaper Marca, known for its close ties with Real, believes the deal is off until January at the earliest.Following months of speculation, Real and United finally agreed a fee of £29m for De Gea, in a deal which included goalkeeper Keylor Navas going to Old Trafford in exchange for the Spain international.
United have also told Sky Sports News HQ that they signed and sent all relevant documentation on time and that they have the evidence to prove it.It is not yet known whether Real or United will consider an appeal over the likely cause of the delay. 
Spanish football expert Guillem Balague told Sky Sports News HQ: "La Liga has confirmed that the documents have not reached them on time and, as it stands, the transfer is not going to take place.
"Everything was done and everyone was waiting. David de Gea was at his girlfriend's house in Madrid, [Real Madrid president] Florentino Perez was at the Santiago Bernabeu.
"Navas was there too and was waiting to pass a medical, and everything was signed and sent to Manchester.
"But the information is that the documentation didn't come back from Manchester United on time.
"Reports say the Navas paperwork came in at one minute past midnight in Spain and therefore did not reach La Liga on time, so the transfer is not going to happen.
"There is no precedent for this. Three years ago, Fabio Coentrao could not go to Manchester United for the exact same reason, and Real asked the league if they could have five more minutes, and the league said 'no'."Nobody expects an extension, so everyone is reporting that the deal has not gone through."
http://www.skysports.com/football/news/11095/9974553/david-de-geas-move-to-real-madrid-from-man-utd-thwarted-by-paperwork-delay
