Actually... no. This decision is good for PAOK (at least).
Mak and Kace are the only players who will probably go to the Euro. It will be a loss, yes, but they are replaceable. We have Mystakidis as a substitute for Mak and Cimirot as a replacement for Kace.
However, Berg is not replaceable. Your team will have a much bigger disadvantage than we have, since you will lose your best player & scorer. It's unfair, but I like that to be honest.