Jordan Ayew who was Swansea's top scorer last season with 11 goals has finally joined the Eagles on a season-long loan.
The 26-year-old forced his way out of the club by skipping training sessions with the Swans.
Swansea have now lost both Ayew brothers as they will play in the Championship this season.
The Eagles have already signed goalkeeper Vicente Guaita, plus midfielders Cheikhou Kouyate and Max Meyer.
Jordan now joins Ghana international Jefferey Schlupp.