Considering the amount of money MON has had available I would say Randy is the most important factor. A lot of managers would have helped us move on. The difference is that I think MON is helping us create a club which could be a force for many years. He is going after young talented players, creating an English spine which is very important.
I'm not saying MON shouldn't be credited, cause he has rewamped a squad with a LOT of deadwood and made many very astute signings. But the importance of MON will be seen the next 2 season IMO.