Former governor of Delta State, James Onanefe Ibori, is due to become a free man in December, after spending half of his jail term in United Kingdom prisons, according to a report from London.
Ibori was jailed for money laundering offences by Southwark Crown court in 2012.
But it is unclear yet whether he will return to Nigeria immediately as legal proceedings concerning the confiscation of his assets worth tens of millions of dollars are yet to be resolved.
The delay in resolving the issue stems from allegations of police corruption in the Ibori matter and the likelihood of the former governor taking his case to the Court of Appeal.
His lawyer told the court on Friday that the former governor would appeal against his conviction on the grounds that British police and lawyers involved in his case were themselves corrupt.