The irony if it was his assistant who undermined him consider how brazen Shakey was, the day after Ranieri, was sacked to put himself in for the permanent job. No sympathy at all for him and it turns out he was just to ensure survival by playing in the way Leicester did and he was close to the players.
I don't see Big Sam returning to management, and Pearson is working at one of the owners' other clubs so there's not a candidate at the forefront who would be considered a shoe-in.