To be honest I haven't even heard the usual transfer rumours regarding Arsenal that are usually in the media, so I'm not surprised they haven't bought anyone this window. To be honest I didn't expect them to fight for the championship from the start and then we saw that this season is not like the others and after that I can't be confident in any team at all
Arsenal are quite cold in this January transfer window and I don't even see their activity in targeting players in this transfer window even though they need decent changes to improve in their front line. I think Arteta should make the most of a pretty good opportunity to buy a new striker for the second half of the season. If Arteta doesn't make improvements in the January transfer window I think they will find it difficult to compete for the title this season. Arsenal front line this season seems to be quite barren in terms of scoring goals so this gap must be prioritized properly to be repaired.
I saw Arsenal repatriate Marquinhos from Nantes in the January transfer window and I speculated that Arteta would use Marquinhos as a gap cover for their front line this season. Statistically in Nantes, of course Marquinhos was not very impressive because he only played 7 matches and was not able to record a single goal in the 7 matches he played. So I think that he will find it difficult to provide impetus for Arsenal front line in the second half of this season. I don't know what Arteta is planning in this transfer market because currently there is no concrete news about their closeness to buying a new striker.