Sibierski's agent Willie McKay stated that whilst negotiations were still ongoing, it looked increasingly likely that Sibierski would be leaving the club as his contract came to an end, especially with newly appointed manager Sam Allardyce bringing fresh ideas and tactics.
His transfer from Kaizer Chiefs to Portsmouth in August 2005 is one of those about which the Stevens inquiry report in June 2007 expressed concerns, because of the involvement of agent Willie McKay.
Willie Nelson | Willie Mays | Willie Horton | Willie Dixon | Willie Brown | Willie Colón | Willie Brown (politician) | Willie Revillame | Willie Miller | John McKay | Jim McKay | Adam McKay | Willie Stargell | Willie Perdomo | Willie Pep | Willie Mitchell | Sophie McKay | Rich McKay | David O. McKay | Willie Thorne | Willie Sutton | Willie Roaf | Willie | Steamboat Willie | Shotgun Willie | Ron McKay | Willie Worsley | Willie Wells | Willie Totten | Willie Savage |