Alan Curbishley is pursuing his compo claim against West Ham United.
The Mail on Sunday says Curbishley is confident of matching the £2million recently won by Kevin Keegan against Newcastle United, with strong similarities between the two cases.
The ex-West Ham boss is claiming the club broke a promise not to sell George McCartney to Sunderland on transfer deadline day in 2008, giving him no choice but to resign.
If Curbishley wins his case, it will be a further financial blow to West Ham whose debts already approach £100m.