Manchester United succumbed to their third consecutive defeat in all competitions at the hands of Watford at Vicarage Road this afternoon.
The Red Devils, who had been beaten by Manchester City and Feyenoord in their last two games, once again put in a poor performance and went down by three goals to one.
Etienne Capoue netted the opening goal of the game but Jose Mourinho's side equalised thanks to a strike from talented youngster Marcus Rashford.
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Despite United coming on strong, Juan Zuniga once again put the Hornets back in front with seven minutes remaining before captain Troy Deeney secured the points from the penalty spot in stoppage time.
As you can imagine, then, Twitter well and truly responded to United's latest humiliating defeat...
Gary Lineker, who is more often than not extremely prominent on social media, couldn't quite contain himself and had his say on the fixture.
The former England international sent a cheeky tweet, appearing to suggest that the United hierarchy made a mistake in replacing Louis van Gaal for Mourinho.
Here's what he tweeted:
Does Lineker have a point? Well, this time last season - after five Premier League games - United were actually in a better position in the table under the Dutchman.
Indeed, the Red Devils racked up 10 points from their opening five games under Van Gaal last term. There is clearly a great deal of work to be done for Mourinho, who must help his side get back to their best sooner rather than later.
Already six points behind Pep Guardiola's Manchester City, Mourinho and co. have it all to do over the coming weeks and months.
What has gone wrong for United in the past three games? Have your say below!