It's just not been Ander Herrera's season, has it?Since strutting through a season-long purple patch in 2016-17, scooping the Sir Matt Busby Player of the Year award, Herrera just hasn't looked the same player at Manchester United.The midfielder hasn't exactly flopped this campaign but his recent struggles in the side were compounded all too recently at Leicester City. The Red Devils slumped to a disappointing 2-2 draw that all but destroyed their chances of usurping Manchester City at the Premier Leagues summit. Two goals from Juan Mata had looked to have nullified Jamie Vardy's opener, yet it wasn't to be.In a defensive calamity, Harry Maguire profited from Marc Albrighton's sensational cross to rescue a point for the Foxes deep into stoppage time.The whole situation was exacerbated by a late Chris Smalling injury that wasn't addressed by Jose Mourinho, nor by the players who desperately tried to rearrange for set pieces.Gary Neville didn't miss a thing from the gantry either and could have sworn that Herrera refused to move to right-back, which turned out to be a fatal decision in the dying seconds.The Sky Sports pundit stated in his podcast: "Smalling has got to flag up as an experienced defender that he's struggling, get Lindelof into the centre," Neville said on his podcast. "Herrera come back to full-back. It didn't happen for two or three minutes."Then Phil Jones recognised it had happened and tried to reorganise - as I saw it, Ander Herrera refused to go to right-back and told Henrikh Mkhitaryan to go back there.

"All of a sudden Smalling sits down on the floor and then goes off the pitch and then comes back on at centre-back. He ends up picking up Harry Maguire."If the allegations are true, Herrera owes a few thousand apologies. Not only is defying team orders bad enough but to shovel responsibility onto an injury teammate is even worse.Nevertheless, the Spaniard has responded in surprisingly sassy fashion over Christmas in a tweet that's still accumulating 'likes' and 'retweets' by the dozen. Take a look:

So, it's fair to say Herrera isn't having any of it.

While not a direct message to Neville, it is almost certainly hitting back at the rumours birthed by the Manchester United legend. The comments section has swiftly becoming a hive of great debate and sport - check it out:

Whether Herrera was the culpable party or not, somebody in the United camp needs to take a long look at themselves after the Leicester game.

Dodging this particular bullet won't do Herrera too many favours, though, with starts remaining few and far between regardless.

Do you think Ander Herrera was to blame for the Leicester City result? Have your say in the comments section below.