Tzeentch Sorcerer problem

so i am in my 50 turn as Tzeentch, then i saw a report say Tzeentch Sorcerer has join to help my army but I don't found them anyway @_@ even in my capital Citadel of Change!!!!!!

Kind of the same thing happening here, around turn 60, but no sign of any Tzeentch sorcerers yet... keep us posted on anything that happens!