Whats wrong with Martinez though? He can't be that bad, not all managers start of managing top teams. Didn't Fergie manage lowly Motherwell or something, Klopp managed Mainz or even Shankly.
It depends what one wants, aldo. If we want to win the title by 2014 (as FSG have stated they do) we can't afford to spend another 2 seasons "rebuilding" or mucking about in mid-table. The problem with Martinez is simple - what exactly does he know about a) signing, and b) managing the best players in the world? Absolutely nothing. But if we're happy to putter around in mid-table while we rebuild, then why did they sack Dalglish?
I also don't think the Shankly parallel may be drawn. Liverpool was in the second division when he signed, and he took us to the division one title and to the european cup in a fairly short time. Martinez has done what on that scale? He kept Wigan up with bare minimum points twice in succession while fighting relegation all season. Did we learn nothing from Hodgson? The ability to keep a club out of the relegation zone is not the same as the ability to challenge for top honours.
If he's signed then of course we will support him in the hope that he has something we've not yet seen, but I suspect the knives will be out all too early if we're hovering in 6th come November...
It's a risk that may pay off handsomely or backfire in just as extreme a manner.