It is certainly true that Neil is willing to change his men and alter how they are deployed. In Scotland he preferred 4-1-4-1. With Norwich, he has had success with 4-2-3-1, the much-loved diamond (4-1-2-1-1) and several variants of the 4-4-1-1 he went with against Forest.
It seems he was a very hard worker - often shirking days off - and a man who racked up the air miles in pursuit of the foreign imports, which arguably eventually brought the club down to the Championship. But I'm guessing that his time in Norfolk will not be featuring in any future books