Palace youngsters Conor Dymond and David Gregory have extended their deals at the club after impressing for the development side last season.
Midfielder Dymond has penned a one year extension to his contract which will see him remain in SE25 until the end of the 2014/15 season. Captaining the under-21 side on occasion, the 20-year-old made 15 appearances for Gary Issott's side last season and scored three times before finishing the season on loan at Conference side Barnet.
Gregory has signed a two year deal and will aim to establish himself a a regular in the reserve side this season. The goalkeeper made six appearances last term, a well as six more for the under-18s, and also spent time away from the Eagles on loan at Sutton United.
The pair will feature for the under-21s alongside fellow academy graduates Sonny Black and Elijah Gabsi next season who were offered their first professional contracts earlier this summer.
The club have also signed striker Morgan Ferrier on a short-term deal. The former Nottingham Forest and Watford youngster spent some time on trial at the back end of last season, scoring once in four appearances, and will look to continue to impress Issott over the coming months.