Manchester United's power struggle with players isn't new - just look at Sir Alex Ferguson

It took just a few clicks of a phone for Alejandro Garnacho to undermine Erik ten Hag.

Shortly after Manchester United's game against Bournemouth, Garnacho liked tweets questioning his substitution and it was unsurprising to see that undone by the next morning.

On Monday, a United spokesperson said the matter was dealt with internally but declined to clarify whether Garnacho has been outright disciplined by his manager. Garnacho has started 24 games in the Premier League this season and it's stunning that he felt emboldened to publicly question Ten Hag, who has overseen his breakthrough into the first team.

When United travelled to Thailand and Australia for pre-season after Ten Hag's appointment, Garnacho was the outfield player not to receive a single minute when the likes of Ethan Laird, Zidane Iqbal, Charlie Savage and Tahith Chong were all given a chance to play.

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Bruno Fernandes later revealed Garnacho 'was not at his best' due to concerns over his attitude and it seemed those types of issues were a thing of the past with the winger.

Garnacho's social media antics last weekend were inadvisable and a regression to who he was on that pre-season tour - a young player who needed to be guided.

That is forgivable to an extent - he's only 19 and everyone does daft things in their teenage years - but he knew liking those tweets would cause trouble and must act better.

United will play Coventry City in the FA Cup semi-final on Sunday and it wouldn't be a surprise to see Garnacho benched or named in the starting line-up again.

Either outcome is plausible given there is a week's break to put the incident behind him, although if Ten Hag does decide to bench him, Garnacho must accept it and move on.

Ten Hag has dealt with several disciplinary issues during his time in charge and there has been a suggestion such problems happen more at United than any other club. But United are the biggest English club and are covered extensively around the world, so any incidents are bound to be magnified and prominent in the news cycle.

Naturally, Cristiano Ronaldo's fallout with Ten Hag was one of the biggest stories in sport, never mind football, and he forced his exit with a bombshell interview with Piers Morgan.

There have also been issues with Jadon Sancho and Marcus Rashford to address. Sancho was banished from the squad in September after his outburst on social media and Rashford was brought into line after his boozy rendezvous to Belfast in January.

Last season, Rashford was taken out of the starting side against Wolves at Molineux Stadium because he was late to a team meeting in the build-up to that match. Rashford was in prolific form and it was a big decision to remove him from the line-up, but it was the right call and all was forgotten when he scored the winner from the bench.

Some fans have suggested such disciplinary issues are symbolic of the new generation of players and they wouldn't have happened with Sir Alex Ferguson in charge, but the legendary manager dealt with almost every problematic scenario possible during his reign.

Premier League footballers are pampered millionaires and can be difficult to manage, yet Ferguson did it masterfully and every incident was dealt with accordingly.

David Beckham was axed for a game against Leeds in February 2000 after a dispute with Ferguson, Paul Scholes was fined two weeks' wages after refusing to play against Arsenal and Roy Keane left in dramatic circumstances in November 2005 due to his infamous MUTV rant.

Ruud van Nistelrooy was dropped on the final day of that season after a fallout, Wayne Rooney was removed from the team after eyeing a departure in 2010 and he was disciplined again a year later when going out on New Year's Eve with Jonny Evans and Darron Gibson.

Ashley Young was dropped for diving against Aston Villa in November 2013 and the list could go on, which proves disciplinary issues at United are certainly nothing new.

They're also not exclusive to United. Premier League clubs commonly have issues with players and unfortunately, it's something most managers have to deal with.

"When I came in at Man United, the standards were not right," said Ten Hag last summer and he deserves praise for taking on player power, which had festered in the last few years.

Ferguson made players fall in line when issues arose and Ten Hag has done the same.