Surely not the NIX... I'd pick he will go back to Germany or Championship.
Just be good to have AWs no 1 keeper playing in a league that recognises FIFA windows, ie not the MLS.
Out of curiousity, apparently Marinovic was the only non US/Canadian keeper that was a regular starter in latter half of the MLS season. So not easy for a foreign keeper to nail down a position in the MLS, visa spots being preferred on outfield players.
Unterhaching still 5th in Bundesliga 3. That league has a one month break from late Dec to late Jan.