Most of it...
When VI arrived, the team had lost Lewis Baker, Ohashi and Beck ( from memory) plus Wharton and Carter. Then, the recruitment tossers had delivered absolute shite in the transfer window-Woodrowe, Dennis and Forshaw ( all of whom had hardly kicked a ball for months) and.... Kargbo.
He has had very poor resources-well below Championship standard.
I am not claiming VI is a brilliant manager, but Eustace left for a reason and that reason is clear.