It will be a blow if they don't get either player but it's hardly the end of the season. They still improved by a large number of wins last season and may again. I know every other team in the Philadelphia has fired its GM (twice in the Sixers case) and one of them won the Super Bowl but I don't think it would be good for the team to change course.
And of course, as far as we know, ownership and the team president and Klentak are all on the same page, much as we'd like to believe Middleton thinks more like a fan. If in fact Manny signs with the Yankees and the Phillies didn't offer him the moon that decision was made by everyone, not just the GM.
Anyway, I've never heard of Dan Clark, so que sera sera for now. I also think that if the Phillies really did take their best shot at Machado and lose, they actually can and should be the high bidder for Harper, and Boras will know it.
Funny, someone on the old PHILS listserv said he didn't think much of Harper and compared to him Ryan Howard. If we could get Ryan Howard-like age 26-31 seasons for Harper (and with better defense and more positionial value to boot) I'm in.
I agree about Keuchel, even four is probably too much (guaranteed at least).