An intriguing comment. What difference could it possibly make to have a manager with "no links to the old firm". What even does that mean and what is the qualifying criteria? Is that someone who has managed the old firm, played for them or just has a blue or green scarf in the cupboard at home?
Ferguson, Aitken and McInnes had all been old firm players and managed to win us silverware. Jimmy Calderwood and Alex McLeish were self confessed Rangers fans but both did not bad for us.
Barry Robson has been with both sides of the OF, but I see you are proposing him as assistant manager . Johnny Hayes played for Celtic, Ross McCrorie for Rangers, should we sell them? Graeme Shinnie's brother was with Rangers at one point, does that qualify? Presumably he should be nowhere near the captaincy of Aberdeen for that reason.
The old firm are not even our present day rivals. We have aspirations to be the third best team in Scotland, our rivals for that position are Hibs and Hearts.