The winter transfer window is open and negotiations on new signings are under way, so we are taking a peak at potential ins and outs that you need to know about for the month ahead.
By calling on Bleacher Report sources across Europe, we have been able to get insight on some of the big storylines that are likely to unfold.
We kick off with the fallout from a transfer that has already been confirmed in Germany...
1. The Erling Haaland Knock-On Effect
Borussia Dortmund have won the battle for Haaland's signature and we will now see how the result of that agreement is impacting the Bundesliga club and their European rivals.