The two men have had some well-publicised slanging matches with each other, notoriously after the 'battle of Bramall Lane' match between Sheffield United and West Bromwich Albion three seasons ago.
Warnock is quoted as saying in this morning's Sun: “No, time is not a great healer. And as for my opinion of Gary Megson — well, I have no opinion of him at all.”
On-loan Forest striker David Johnson is not eligible to play in the match but another Blades loan signing Danny Webber has scored three times in two games and will be the man to watch for the Forest defence tonight.