I agree but many City fans are not so much for the patient build up and want results. The late goals thing is a killer and watching it week after week for 2 seasons now makes the utter frustration understandable. That, rather than the results by themselves, is what will push people over the edge.
He's been with us over 3 years.
Year 1: Set up-complete restart
Year 2: Won the first division
Year 3: Consolidation, mid table
Year 4: ??
People expect to continue improving. If he can sort out the last minute goals and we challenge for Europe it'll be fine, if we don't improve on last year people won't be impressed.