If the January transfer window is going to be a disappointing one for Arsenal fans, then the summer should make up for it. Mikel Arteta decided to spend big on the likes of Declan Rice and Kai Havertz last summer, knowing it would limit his side mid-season. And that understanding probably explains why there’s no hints at frustration stemming from Arteta that he can’t sign a striker or another profile this month. Instead, it seems Arsenal will just chase a low-key, short-term move to cover for their unexpected injuries at the back. Were Jurrien Timber fit right now, there probably won’t be any …