What those of you suggesting we can just build a better defense to cover for any shortcomings we may have at GK are overlooking is, we can't just wave a magic wand and fix the rest of our defense just like that. Even if we do managed to bring in a number of the replacements we've been linked with, you're working under the assumption that everything gels, and we stay relatively injury free. Something that we've not been able to do in what seems forever.
The number of factors involved in putting that together are far more varied and uncertain.
The ability of de Gea to play well enough to cover for any of our recent defensive frailties only proves that the position is a little more important than some here are suggesting. It isn't a throw away position.
Unfortunately, we're not going to find a like for like replacement for DDG as he's just too good and no one that approaches his level is realistically available. That said, I'd be far more comfortable with bringing in someone established in our league, such as Cech or even Lloris. While it's certain that Tottenham would surely rake us across the coals, the ability for us to obtain Cech, if we so desired, seem almost assured considering that he's surplus, he want's to start, and he's available if we pony up the dosh.
Like I said before, why not try and strengthen that position as much as possible? We're aren't skint by any stretch, so we don't need to rely on an unknown in goal.