Half-a-dozen candidates have been interviewed by Rovers for the position to succeed Mark Hughes, with Paul Ince, Sam Allardyce and Steve McClaren among the contenders.
Williams said: "The process is still on-going and we are on target for the end of this week."
Copyright (c) PA Sport 2008, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: http://gms.to/writeforgms