It's a hard one. Goldson, Helander, Katic and Edmundson have all stood out in some games but they've all had howlers too. Katic certanly seems to be treated more harshly than the rest for mistakes for some reason and finds himself unfairly benched for long spells, whereas any errors from the other 3 especially Goldson seem to be overlooked. So Katic for me really hasn't had a fair crack at times which has stunted him.
Helander and Edmundson have probably been more consistent than the other 2 in the short times they've been in the side and made fewer mistakes. H was just probably getting into his stride when he was unfortunately injured so we may not have seen the best of him yet, and Ed's all round game is impressive, probably the best passer of the 4 amongst many other qualities.
Goldson's decent, but I think we've seen the best of him, and the others are already there or there abouts but they have other levels to find imo which puts his shirt on a shaky peg for me. He seems to be the coaching staffs first pick but theres no way he is head and shoulders above the others despite having the most chances and longest run in the team, which is a worry.
So if pressed, I'm going to have to say Helander is just out in front of Goldson at the minute and thats the 2 I would start the season with. But my honest belief is that Edmundson is potentially the best footballer of them all. Sadly Katic s now out of the mix for a time which doesn't help him iron out the kinks in his game, which will stunt him further. Shame as I think we all have a soft spot for him.
Don't think we've ever seen Helander and Edmundson together yet, but could they ultimately be our strongest pairing? It wouldn't surprise me.