
The ANSA news agency Wednesday quoted a Rome public prosecutor as saying that Capello, who coached Juve from 2004 to 2006, frequently declined to answer or claimed not to remember when being heard as a witness in the trial in late March.
Giraudo's answers, the prosecutor said, contradicted earlier declarations from French striker David Trezeguet about his contract renewal with Juve in 2004.
The trial is based on alleged threats made by members of GEA, a firm of footballers' agents, to control the transfer market in Italy.
Among them is Luciano Moggi, who like Giraudo resigned as Juve manager in 2006, and his son Alessandro. Moggi and Giraudo were banned for five years in a sports corruption trial involving also referees and managers from other clubs.