The signings of Hanna Lundkvist and Lea Schuller were formalised when the window opened on 1 January.
Lundkvist joined the Reds after departing American club San Diego Wave, while Schuller made the switch from German champions Bayern Munich.
As far as outgoings are concerned, Hannah Blundell has signed on loan with Everton for the remainder of the 2025/26 campaign.
Geyse, meanwhile, has completed a permanent transfer to Mexican side Club America, after two-and-a-half years at United.
The window is due to close for WSL sides at 23:00 GMT on Tuesday 3 February.