Yaya Toure to Arsenal
Arsene Wenger was close to signing the Ivorian international in 2003, and he even featured for the Gunners in a pre-season match against Barnet.
However, the powerful midfielder failed to impress playing behind the striker, and the Gunners were also struggling to secure a work permit.
The player eventually made his way to Barcelona via Donetsky, Olympiakos and Monaco, and has subsequently found a home with Premier League rivals Manchester City.
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