The January transfer window will be crucial, like last season.
In the twenty or so years that the transfer window has been a thing, I don't remember a single one which we didn't claim on here was crucial.
But without wanting to be too contrarian, unless we have a significant injury somewhere (Watkins / Cash?) it's probably one of the least crucial that I can remember.
Rather than bringing in a load of new players, the focus should be on turning Guessand / Sancho / Elliott / Malen into more productive versions. Because we don't have the financial leeway to just toss them out and replace them.