#1 - John Obi Mikel
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The infamous transfer of John Obi Mikel is something everyone knows. The Nigerian had not only agreed to join Manchester United, but he signed also signed a contract with them.
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Manchester United has even unveiled him after he joined them for £4 million from Norwegian club, Lyn. The 19-year-old was even spotted sporting a United shirt in a press conference.
However, somehow, out of nowhere, Chelsea signed him up. The Blues were then taken to court by United, and the case was dragged on for a long time.
In the end, Chelsea were asked to pay £12 million to Manchester United and also the initial £4 million transfer fee to Lyn.
Edited by Sripad