Yes, good enough to be a squad player for sure - but squad places are limited. Propper didn't feature much in thhe later part of last season, when we showed distinct signs of improvement. Time to move on, simple as that really - he's still a good player, but doesn't fit our profile going forward.
Sadly, my present feeling is that Alzate and Molumby will go for peanuts (mainly for their own good).
I think you may be right. Our policy is to bring youth through where possible AND buy young talent. In some cases though we will be able to buy better than we have. Would I like to see Alzate and Molumby anchor our midfield in the future? Of course. The problem is, I don't want us to pass up the chance to bring in better players either.
Last season wasn't particularly great for Alzate or Molumby. Alzate didn't look particularly convincing when he played and Molumby barely got a run (7 starts + 8 sub) in a PNE side that finished 13th in the Championship. We're hardly a side that doesn't give youth players a chance either with Sanchez, March, Dunk and White all being huge contributors this season.
What I do think is that as usual, we'll sign a couple of players, Potter will bring some youth players in with the first team for pre-season and whoever makes the cut, makes the cut. The future for Alzate and Molumby is less certain and I can see a £2-3m deal being found.