Miguel Herrera has been fired as Mexico coach following allegations that he punched a television reporter.
Former Arsenal midfielder Abou Diaby has rejected an offer to join West Brom in favour of finding a new club in France.
The Rams are waiting to hear from City as to whether they are interested in a deal for the 28-year-old.
O'Connor has been made available for transfer by Derby boss Nigel Clough and he is in the final year of his contract at Pride Park.
O'Connor played under current Robins head coach Sean O'Driscoll at both Bournemouth and Doncaster.