Ring wants to be here. But he also wants to play internationally for Finland and that is his priority. As long as he has the ability to do that, he won't go anywhere.
I disagree that Sands is more important. We have a window to win now - maybe next year again with a healthy, productive Villa. I'm not optimistic about our next DP, but if it is a star again, then we can win again next year if he "fits." Which brings me to Ring. Ring makes us a better team next year. Sands doesn't. Lots of stuff can happen over the next 5 or so years, which is when we would expect Sands to break in.
Who knows, maybe we go the cheap route like NJRB and LA Galaxy have done?