Footballers and Twitter - not always a great combination.
The app can be a great platform for the world's biggest stars - but it can also cause problems with some finding that old posts can come back to haunt them.
Most players have their own social media accounts. Some get their management teams to run them while others take control themselves - but occasionally with unfortunate consequences.
Arsenal target Runar Alex Runarsson is the latest player to have some of his old tweets dug up. The goalkeeper was far from complimentary about Arsene Wenger in 2011, calling the then-Gunners boss a 'French f***,' 'stupid' and 'the dumbest man on this planet' in three separate posts.
It's fair to say the shot-stopper could have some explaining to do if he arrives in north London. But Runarsson is not the only star who has lived to regret historic tweets.
Sportsmail takes a look at some of the memorable tweets players were left wishing they'd never sent.
Arsenal transfer target Runar Alex Runarsson has had some of his old tweets dug up by fans
A second tweet, posted in July 2011, described Wenger as 'stupid' and a 'French f***'
Wenger was once again the subject of Runarsson's anger after Arsenal's defeat by Liverpool
New Tottenham signing Matt Doherty was forced to delete two old tweets which revealed him to be an Arsenal supporter.
The defender completed a £15million move from Wolves at the end of August and quickly looked to get fans onside by taking part in a video where he sheepishly took down the posts.
One read: 'Yes I am a HUGE Arsenal fan' while another said: 'I love Arsenal forever and ever.'
Doherty is not the only player to have previously shown his love for Spurs' rival club. In a since deleted post, his fellow right-back Serge Aurier tweeted a picture of him donning an Arsenal home shirt.
Tottenham released a video of new signing Matt Doherty deleting old tweets about Arsenal
The defender posted that he was a huge fan of Spurs' north London rivals on Twitter in 2012
Players often get frustrated at referees. Sometimes they vent their anger on the pitch, occasionally in a post-match interview.
But Ryan Babel went a step further when Howard Webb angered him in Liverpool's defeat by Manchester United in 2011.
The Dutchman posted a picture of Webb in a United shirt and wrote: 'And they call him one of the best referees? That's a joke.'
But it was no laughing matter for the FA who fined the forward £10,000.
Ryan Babel posted a mock up of referee Howard Webb in a Manchester United shirt in 2011
Manchester City defeated Tottenham 3-2 in 2012, but Spurs' right back Kyle Walker had a message for the opposition fans.
He wrote: 'All u Man City fans u can talk now we will just see at the end of the season.. Was u all there when City were no where to be seen [sic] #gloryfans'.
Five years later Walker completed a £50million move to the Etihad.
Kyle Walker criticised Manchester City fans only to sign for the club five years later
You'd have been forgiven for being a little bit confused when Joey Barton signed for Burnley in 2015.
The midfielder had spent much of 2014 aiming digs at the