It's ridiculous to say that Houllier wasn't the best manager available, but then not be able to, at the very least, suggest one or two names who you think we could have gotten.
Nobody is expecting you to name every manager in World football, but at least make some suggestions.
For two avid football fans who have thousands and thousands of posts between you on a football forum, I'm surprised you can't apply a bit of knowledge and logic to suggest a few names.
Here you go, I'll make it easier:
We can't go for the top tier managers - so rule out Mourniho, Hiddink, Del Bosque & Co.
Now, I'm sure we probably couldn't attract a manager who is not necessairly in that top group, but whose side is currently in the CL - so rule out Jol, Redknapp, Emery (Valencia), Mclaren and so on.
I guess you could be thinking managers of national European sides - so perhaps people like Bilic (Croatia), Advocaat (Russia), Quieroz (Portugal), Antic (Serbia) and so on.
Or how about European based managers whose teams are in the Europa League cup (although as we're not in this competition I think it would be hard to attract a manager whose current team is), but here's some names anyway....Flores (Atletico), Rutten (PSV), Mazzari (Napoli), Stuttgart (Gross), Garrido (Villarreal).
Now, simply apply some logic and think about their success as a manager, who they currently manage, whether you think they'd be willing to leave their current team and pick out a few names.
In my opinion, apart from the top, top managers - there's hardly any names there (and I've picked out managers from some top clubs) whose trophy haul/experience/knowledge and so forth stands up to that of Houllier's.