Arsenal midfielder Francis Coquelin is one of a long list of players at the club to benefit from loan spells throughout their career.
The midfielder praised the system by saying it made players "tougher", with the 24-year-old being sent to Lorient, Freiburg and Charlton by manager Arsene Wenger.
Time away from the Emirates has now made him one of the best holding midfielders in the top-flight, so here's a look at three other players in the squad that benefited when out on loan.
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Though Welbeck started his career at Manchester United, he enjoyed successful loan spells at Preston North End and Sunderland during his time at Old Trafford.
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Steve Bruce brought him to the latter believing he could keep them up, and he did just that by finding the net six times in 26 league games, helping them to finish a lofty tenth in the table.
The England international returned to United a better player as a result and started the 2011/12 season with two goals in as many home games against Tottenham and Arsenal to fire Sir Alex Ferguson’s side to the top of the table.
Welbeck also earned his first international call-up to Fabio Capello’s England side and made Roy Hodgson’s squad for the European Championships in the summer of 2012.
Ramsey was on the fringes of the Arsenal squad when he was sidelined by a horrendous Ryan Shawcross tackle in 2010 and was later loaned to Nottingham Forest and Cardiff City to help him return to form.
The Welshman scored just one goal in 11 appearances for the two teams combined yet has since forced his way into Wenger’s starting line-up, helping the club win the FA Cup in 2013 with an extra-time winner.
It completed a fairytale comeback for the Wales international, whose career was in jeopardy after that dark day at the Brittania Stadium.
The 25-year-old will be a key player for his country at the European Championships in France, and alongside Gareth Bale will be hoping to gun down Hodgson’s England side.
Many thought that Mathieu Debuchy’s main rival for the right-back slot would be Carl Jenkinson, with nobody counting on talented youngster Bellerin.
The 20-year-old played eight times in the Championship with Watford yet was introduced to the Arsenal first team after an injury to Debuchy midway through last season.
And he has been a regular in Wenger’s starting XI ever since, delivering strong performances against the likes of Bayern Munich and Manchester City during the course of his short time at the Emirates Stadium.
The ex-Barcelona academy graduate is now one of the most promising players in Europe and his stock will only rise if he helps Arsenal win the title this season.
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