Did you see Liverpool before he took over!?
They were an absolute shambles under Hodgson and Dalglish. It was a completely different Liverpol to the one we see today and have seen over the last 5+ years. There expectations may have been top four, but only on the same level that ours were in the mid to late 2000s when we couldn't get it done pre-Redknapp with a team full of shite like Jenas, Chimbonda, Bent, Zokora etc.
I don't think anyone bar perhaps the most optimistic Leicester City fan would ever expect top four. They fluked their way to a title and then reverted back to the norm following it. Hovering around mid table in the league. He absolutely should have got top four with them. In both years he finished 5th, he was top four for the majority of the seasons until the very last two game weeks before fucking it up. That should actually be enough for us to not go for him
Once again though, what coaches do at other clubs in terms of league position should never be a factor when judging a coach's ability.. Too many people these days are fixated on win percentages and honors.
Brighton could have finished 10th in the Premier League this season for example (and below us) but it wouldn't have done anything less to everyones opinion on how good of a coach De Zerbi is.