A year ago Klopp had just announced to the team he was leaving.
It's more than conceivable that the players would want to know who was taking over, which new management / coaching team would be in place and what new tactics would be employed - to say nothing of whether we'd drop off a cliff or not. Who would want to sign a contract extension under those circumstances?
I feel that it is all coming to a head now (VvD on the verge of signing a new contract, Salah in the media and it's clear a renewal is being discussed, Trent shouting his mouth off, simply because they are all happy with the new manager & mgt / coaching team, very happy with the way we are playing (the style of which could extend their sell by dates) and so are now delighted to sign up again (as long as wages and term are agreeable).
You can't blame Klopp (for resigning), the players (for wanting to see what is happening) or the club (because the players wouldn't sign before now) for this situation. At least I don't.