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It looks like it could be decided within a day or two.
Literal
1-day-or-2-days-[within-中][even-にも] be-decided-[looks like-そうだ].
News/scheduling register. 一両日 'one or two days, a day or two' is a fixed Sino-Japanese expression for a very short span, common in news reports about pending decisions. ~中にも combines 中 'within/during' with にも 'even (at),' suggesting 'within as soon as.' 決まりそう is the ~そうだ visual-evidence/inference form from 決まる 'to be decided' — 'looks like it will be decided.' A terse news-blurb sentence.