Sheffield United did not complete a deadline day swoop for Alex Collado as a result of unsigned paperwork.

What's the talk?

That's according to a report by Spanish publication Mundo Deportivo (via Sport Witness), who claim that Barcelona were left furious with Slavisa Jokanovic's side for failing to submit the necessary paperwork in order for the winger to complete his switch to Bramall Lane.

The report goes on to state that both Barcelona and the 22-year-old had signed the loan contract, although the Blades informed the LaLiga side at the 11th hour that the deal had fallen through.

However, it is also reported that Sheffield United's stance on the matter is that the player's agent attempted to alter previously agreed terms of the forward's contract at the Championship side - which led to their cancellation of the deal.

Fans will be fuming

While it appears unclear exactly who is in the wrong regarding the collapse of Collado's proposed last-minute switch to Sheffield United, if it is indeed true that the reason the winger did not join the Blades is due to the club failing to submit the necessary documents in time, fans will rightly be fuming.

Indeed, with it being clear that Jokanovic is in desperate need of players who can operate in the wide attacking areas of his squad - with the Serbian currently having no natural options on either wing - as the Blades have seen their season get off to a diabolical start, the deal for Collado appeared an important one to get over the line.

Furthermore, exactly why Jokanovic failed to make a move for the Barcelona youngster until the dying moments of the transfer window is also questionable, and could give credence to the Spanish side's claim that it was the Championship club's lack of organisation that caused the deal to fall through.

Either way, the fact that the Blades failed with their move for the £4.5m-rated man is undoubtedly a disaster for the club, as Jokanovic will now have to make do until January, at the very earliest, without any wingers in his first-team squad.

In other news: Lost 70% duels: £19k-p/w Sheffield United waster badly failed Jokanovic in August