For Steve Clarke there is no one simple reason why the Portuguese triumphed where his predecessor Claudio Ranieri just failed .
Steve Clarke is a Chelsea man since 1987 and now one of the coaches charged with deploying the system .
For Steve Clarke , a Chelsea man since 1987 and now one of the coaches charged with deploying the system , there is no one simple reason why the Portuguese triumphed where his predecessor Claudio Ranieri just failed .