Slipknot frontman says he will definitely do something with the former Guns N' Roses bassist
Singer says he's 'feeling better' about the idea though
Stuart Galbraith hails 'remarkable' tribute to late Slipknot bassist
Band close Knebworth event with spectacular show on Sunday night (July 10)
Masked metallers, Limp Bizkit and Motorhead set for Sonisphere today (July 10)
Masked metallers are due to headline festival on Sunday (July 10)
Singer promises 'old school Slipknot show' for Sunday (July 10)
Spy Catcher, Feed The Rhino, Mad Dog also added to the bill
Festival will also host a book of remembrance for late bassist
Masked metallers return to the stage for the first time since the death of bassist Paul Gray