The officer, whose tenure had formally ended on November 10, as there is no extension from the Centre, has recused himself from the probe of corruption case involving Bansal, CBI claimed.
The sources said Gautam is also part of 2G scam probe hence the agency will seek permission of competent court to relieve him.
The agency is about to complete an internal probe looking into allegations of torture against Gautam levelled by Bansal in the suicide note.
Two months later, Bansal who was released on bail also committed suicide along with his son.
In the suicide note, Bansal made serious allegations against Gautam and his team members for torturing his wife and daughter and also threatening action against him and his son.
The agency which received a notice from National Human Rights Commission in this regard set up an internal inquiry under a joint director to look into allegations.