I'm a big Frank Rijkaard fan and if ever, for some cataclysmic reason, Bob were to leave us, the Dutch genius is the only one I would want to replace him.
For me, he was the man who laid the foundations for the current Barcelona set-up and I always think Guardiola was very fortunate with regard to the players he inherited.
In an earlier era and considering all the managers we've had since Fergiescum took over at the Swamp , I always regretted the fact that we got rid of Mel Machin, seemingly prematurely, without giving him a proper chance to fully make his mark.