Jordan Ayew of Ghana reacts during the 2017 Africa Cup of Nations Finals third place match between Burkina Faso and Ghana in Port Gentil, Gabon, 04 February 2017. EPA/SYDNEY MAHLANGU
Ayew, 27, spent last season on loan at the Eagles and will return to Selhurst Park after agreeing a three-year deal with the club.
The fee was reported to be £2.5 million ($3.1 million).
Ayew scored one goal in 20 Premier League games for Palace last season and is looking forward to playing for the club again as the season approaches.
“I am very happy, I really enjoyed myself last season,” he told cpfc.co.uk.
“I enjoyed the stadium, the fans, the boys — they were really good to me — everything here was positive and that’s why I decided to continue with Crystal Palace.”
Manager Roy Hodgson said Ayew “certainly played his part in the club securing its highest-ever Premier League points tally in the last campaign”.
Ayew, who scored two goals in the recent Africa Cup of Nations, is Palace’s second new recruit of the summer after the signing of goalkeeper Stephen Henderson from Nottingham Forest.
The club have lost full-back Aaron Wan-Bissaka to Manchester United and there are questions over the future of star man Wilfried Zaha, who continues to be linked with a move to Arsenal or Everton.
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