'Consistency' is the word

Our two previous managers and our current have all complained about how the players need to be more consistent.

Malky Mackay - http://www.walesonline.co.uk/sport/foot ... ay-2496807
Ole Gunnar Solskjaer - http://www.bbc.co.uk/sport/0/football/29194613
Russell Slade - http://www.bbc.co.uk/sport/0/football/30619944

Does this mean we cannot get a manager who can encourage consistent performances from the players or that the players we have cannot continue to maintain their current levels?