Symonds eventually had his contract cancelled in 2009 for breaking a drinking ban while in England.
If the conditions of the contract are not met by either party within an established period, the deposit is returned and the contract cancelled.
Peterborough United defender Exodus Geohaghon has had his contract cancelled by mutual consent.
Rotherham have signed Crawley defender Claude Davis after he had his contract cancelled by mutual consent.
Oldham have also confirmed that Youssouf M'Changama has had his contract cancelled by mutual consent. .
Meanwhile, Burton have confirmed striker Justin Richards has had his contract cancelled by mutual consent.
Aberdeen announced on their website: "Gregg Wylde has had his contract cancelled by the club".
His arrival follows the departure of Steve Simonsen, who had his contract cancelled earlier this month.
The 39-year-old has had his contract cancelled following the Imps' relegation from the Football League.
Meanwhile, Jordan Hall, 27, has had his contract cancelled by mutual consent.
