If Not BB, Who?

[Lods]

Ugly style of football, questionable character, and a knob head in his pressers. And his GF teams were not ordinary.

Lyon has had some good success.
He's also had some bad years.

If he were to replace BB at this stage I suspect he would also be a polarising and divisive figure largely due to some of the factors above, but also due to the fact that most have not exhausted their patience with Bolton just yet.
Some of the negatives regarding Lyon are based on little more than our own bias and perceptions but...
Folks would have pretty set opinions from the get-go
He'd want to put results on the board pretty quickly to turn the negative opinions around.

Your length of time as a Carlton coach seems to have an interesting element to it.

If you come into the job with half hearted supporter approval you are under the pump much earlier and your time in the job is limited unless you deliver immediate success.
If you come into the job with greater support, a clean slate even, people are infinitely more patient...

Any new coach needs to belong to the second group.
If Bolton is replaced it will be if and when the majority's patience has run out... and his replacement will need to be seen as someone with strong, even universal approval, as the right man/woman for the job.