chelsea owner roman abramovich believed he had pep guardiola in 2012 .
but the spaniard was spooked by abramovich 's regular hiring and firing .
guardiola craves the stability he has found at bayern munich .
and he will seek similar assurances should he join manchester city .
pellegrini 's time at the etihad appears to be drawing to a close .
city are clinging on to fourth spot in thepremier league .
read : patrick vieira has all the tools to become next man city manager .