Palace boss George Burley hopes Julian Speroni and Neil Danns will emulate Darren Ambrose in penning a new deal at Selhurst Park.
Speculation over Ambrose making a potential move to Queens Park Rangers was silenced on Monday when the midfielder signed a three-year extension on his contract, while new captain Paddy McCarthy has also recently agreed a fresh deal.
Palace have offered new contracts to goalkeeper Speroni and attacking midfielder Danns, and Burley is keen for the pair to commit their futures to the club.
"Offers have been made to the pair of them and it is an ongoing process," Burley told Sport Croydon.
"We are trying to build for the long-term and we believe getting these players signed on new deals is an important part of the process.
"We're working on getting new players in as well. We're trying to build a good squad of players."
Meanwhile, Burley has reiterated that young right-back Nathaniel Clyne will remain at Selhurst Park this season, despite interest from Birmingham.
The 19-year-old returned to the Palace squad from England U19s duty on Thursday, but is unlikely to play in Friday's pre-season friendly at Brentford.
"He's a Crystal Palace player. There will be speculation from the Premier League because he is an excellent young prospect, there's nothing we can do about it," said Burley.
"He's back with us and I'm looking forward to working with him. I don't think he'll feature on Friday, but he'll be a big part of things next week."