Why Rivals are Eager to Sign Arsenal's Star Midfielder

Over the years, Manchester City have signed top players from Arsenal football club to strengthen their squad.
The likes of Adebayor, Clichy, Nasri, Toure and Sagna left Gunners to join Sky Blues and three of them have won the premier league title as well while Arsenal still haven’t since 2003-2004 season.
Now according to reports, Manchester City are closing in to sign Arsenal’s star midfielder and England international Jack Wilshere.
The question is, why are Man City so eager to sign Jack Wilshere?
Although one reason mentioned in the provided link is that of increasing home grown stars to comply with Champions League policies but other than that, what will Man City really gain by splashing the cash for him?
The 23 year old star showed a lot of promise during his early days and impressed against the likes of Barcelona. However, Wilshere has never been able to show consistency and a lot of that has got to do with injury concerns.
Last season, he missed 13 games, 9 in the league because of injury. This season, Jack played his last league game in Novemeber and has missed more than half the season recovering on the treatment table and the injury concerns do not show any sign of improvement.
City have the likes of Yaya Toure, Fernandinho and Fernando mainly for midfield role and Wilshere will not really improve that department, in fact Wilshere is not even Arsenal’s best midfielder. Plus, City may have to spend decent sum as Arsenal rate him very highly.
The citizens should really look elsewhere to sign a midfielder as doubts will always be there with Jack Wilshere’s form and injury concerns.
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