James Husband has finalised his loan move to Fulham from Middlesbrough, while Fernando Amorebieta has moved to the Riverside Stadium as part of a swap deal.
Husband, who joined Boro from Doncaster Rovers last summer, will represent the Cottagers for the remainder of the Championship season.
The 21-year-old told Fulham's official website: "I'm here to finish off the season and help Fulham get as high up the table as we can. You look at the players in the squad and there's Premier League talent in there so I see no reason why we can't go unbeaten until the end of the season."
Amerobieta joins Aitor Karanka's Boro side as they continue to fight for Premier League promotion.