Whenever it looks as though Manchester United have turned a corner, they have a knack for thumping into another brick wall.

On Sunday, it was a never-say-die Sheffield United who refused to lie down even after the Red Devils had mounted an incredible comeback from 2-0 down.

Three goals in seven minutes from Brandon Williams, Mason Greenwood, and Marcus Rashford looked to have snatched a rare away win before Oli McBurnie hit an injury-time equaliser to make it 3-3. 

Whether he did that with a little help from either his shoulder or his arm is immaterial now - and VAR decided it was the former. 

Timing wise, Ole Gunnar Solskjaer needed a result, the pressure on the Norwegian boss having intensified since Mauricio Pochettino became available earlier this week.

It wasn't to be, however, as his men's poor form on the road continued.

On the one hand, there's no shame in dropping points against Chris Wilder's men.

The Blades have surprised us all this season, beating Arsenal, drawing with Tottenham, and looking more likely to be pushing the top six rather than flittering around the relegation zone.

What's alarming is when you compare the respective resources of the two clubs.

Sheffield United's average weekly wage is the lowest in the Premier League at just £9,000. For perspective, United's is 10x that and the fifth highest in the top flight. Their overall wages are the highest in the Premier League, with an outlay of £171million.

In fact, according to Spotrac, the club are still playing Alexis Sanchez £16.5m of his £21m annual salary while he's on loan at Inter Milan.

The Nerazzurri are responsible for just £4.5m - although, in truth, even that's probably money ill-spent given that he hasn't scored since his debut and now he's injured again.

That means United are forking out more on the Chilean's stint in Lombardy than Sheffield United are using to finance their entire team - all their players combined earn around £14m.

The most expensive XI Wilder can assemble cost the newly-promoted side £34m - which wouldn't even get you Fred.

Solskjaer will no doubt be keen to open the war chest again in January.

In the meantime, United's kitty continues to be drained by Sanchez, who scored a grand total of five goals in 45 games at the Theatre of Dreams.