straight to your inboxDavid Silva has issued praise to all three of the managers he played under at Manchester City, in his final interview before leaving the club.Silva was brought to the Etihad by Roberto Mancini, before seeing Manuel Pellegrini and Pep Guardiola also take the City hotseat in the last decade.As he prepares to leave City for a new challenge, Silva told City TV that Mancini made a strong effort to try and sign him while he was still a Valencia player."He used to call me quite