Few things:
1-Tek didn't renew, and he might never as he could be waiting for the situation to finalize
2-Tek might stay as 3rd GK, and we get the option of loaning our youngsters for once (looking at Astralaga and Yaakob.
3-I won't mind Ter Stegen staying and it is logical move. Joan Garcia is atm, a one season wonder.
If Marc is entertaining his chances against him, so be it. Let's so how it goes next year. Will Garcia take his game to the next level or get back to being a relegation level GK? If it is a former, then getting rid of Ter Stegen will be easier than now, if Joan is a bust, well, at least we still kept what we have.
Finances is obvious hardle, but Deco last interview suggest we might be doing decent there.