Palace defender Emmerson Boyce has completed his transfer to Wigan in a £1 million, four-year deal.
The Eagles could be due another £200,000, depending on how many appearances Boyce makes for his new club.
The 27-year-old was voted Palace's player of the season last year and had become a huge fans' favourite.
However, he will now hook up with former Eagle Fitz Hall at the JJB Stadium.