The first game released under the newly acquired Football Manager brand was Football Manager 2005. Having been left without a publisher for its football management series, Sports Interactive teamed up with Sega and later, in April 2006, Sports Interactive was acquired completely by the publisher in a continuing trend of consolidation within the games industry. Whilst the Championship Manager series would go on, Eidos no longer had any source code, or, indeed a developer for Championship Manager. These developments led to a further announcement that future Sports Interactive football management games would be released under the famous Football Manager brand name.

On 12 February 2004, after splitting from publishers Eidos Interactive, it was announced that Sports Interactive, developers of the Championship Manager game, had retained the rights to the source code but not the rights to the title Championship Manager, which were held onto by Eidos (who previously acquired the brand rights from Domark upon their merger in 1995).

Main series Football Manager 2005 Main article: Football Manager 2005 5 Miles Jacobson comments post Brexit about the future of Football Manager.

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