#3 Jack Wilshere - 9 years
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A product of Arsenal's youth academy, Jack Wilshere made his senior debut in 2008 just ten days before Coquelin, in a Premier League match against Blackburn Rovers; in doing so he became the youngest ever league debutant for Arsenal at just 16 years and 256 days.
The Englishman has suffered many major injuries throughout his career which has impeded his growth. Wilshere spent last season on loan at Bournemouth after he fell out of favour at the Emirates.
Recently the 25-year-old made his first Arsenal start in 493 days and played well, often pulling the strings for Arsenal against their lower-league opponents Doncaster in the Carabao Cup.
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The playmaker was one of the most exciting young prospects in England. Football pundit Charlie Nicholas believes it is going to be very difficult for Wilshere to get back to where he was four or five years ago because of the severity of his injuries but if he can get close to that he would still be worth it to Arsenal.
Former England boss Fabio Capello had said about Wilshere: “This is not normal, to be so young and so good." Hopefully the England international can maintain his fitness level and cement his place in Wenger’s starting line-up this season. He certainly deserves credit for his perseverance, everyone would love to see Wilshere reach his full potential.