Oh I think he'll spend this summer, and I think he'll be ruthless too. It was pretty clear how frustrated and gutted he was as we limped towards the end of the season.
I think the players, such as Bendy / Denilson etc all got their excuses ready early....he didn't play 'em much, and I think he'd already made up his mind the current crop couldn't be trusted to deliver, well before the end of the season.
He's been ruthless in the past when players haven't performed (see lehmann) or when they're on there last knockings (Petit, Overmars, Lauren etc). But I think he knows this is crunch time....we won't hear much from him before the start of the season, but I think we'll see a lot of moving and shaking.