Gabriel Jesus coming is big news already though I expect he'll not have an impact until the summer as is the norm for winter buys.
Honestly barring an out of the blue opportunity it's highly unlikely we'll buy anyone, us and the other big guns are getting wise to how hard it is to buy in this window. If anything mad as it sounds we're more likely to end up selling than buying, Yaya perhaps making his exit.
Their season finishes on December 4th. That gives him near enough a month off before coming to City in January. I'm hoping that bit of extra rest might help him make more of an immediate impact, although of course he'll still need to learn how the team plays.