He still faces charges of being "part of a criminal organisation" - a wide network of individuals, who are alleged to have fixed football matches - stemming from a separate investigation in Greece.
The sale would end five years of ownership by Fawaz Al Hasawi, who has said that the deal was was "99%" complete.
Nottingham Forest's drawn-out takeover by Greek shipping magnate and Olimpiacos owner Evangelos Marinakis has been completed after it was given the go-ahead by the Football League.
The 49-year-old - who heads up a consortium with compatriot Socrates Kominakis - has also been accused in the past of being involved in the bombing of a bakery owned by a referee although no action was taken.
Shipowner and businessman Marinakis has stated his plans to make Forest "the model club" in England for interacting with supporters, after a hard season in the Championship. Nicholas Randall, QC, will chair the club while Ioannis Vrentzos, who has been CEO of Olympiacos since 2010, will become CEO at Forest.
On the game itself he said football wasn't easy but with hard work, a clear vision and a strong management team, a good coach and a committed squad, Nottingham Forest will now move in the right direction with the support of its fans. Nicholas knows the football industry like few others and has accepted an offer to join the club as its chairman.More news: 3 adjustments to make in Game 6 — Washington Wizards
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On that, he said: "I have nothing to be afraid of and to worry about as I have done nothing wrong".
"What we have achieved in national and European football with Olympiacos FC, we want to duplicate with Nottingham Forest".
They say they saw no reason to disqualify Marinakis or the consortium under the test.
Two-time European Cup winners Forest only escaped relegation to England's third tier on goal difference with a win on the final day of the season. The controversial Greek businessman and owner of Olympiacos has vowed to return the Championship side to "the glory days".
Marinakis, who set up his business in the United Kingdom after attending school and university in London, wants to replicate his success with Olympiakos at Forest and has appointed lawyer Nicholas Randall as club chairman.