Burnley boss Sean Dyche is keen tie up their off contract players.
Dyche is aiming to finalise further contracts, after securing Danny Lafferty on a new three-year deal.
The Clarets boss offered terms to Lafferty, Michael Duff, Junior Stanislas and Luke O'Neill at the end of the season.
So far only Lafferty has put pen to paper. But Dyche is hopeful that the rest will commit to the club over the summer.
"We're already in negotiations," said the Burnley manager to the Lancashire Evening Telegraph. "A lot of the players here were under contract and had built-in things that cover them moving forward.
"Some will be affected. Some will be ongoing.
"The good thing with that is that obviously started a few weeks ago.
"We're pretty sure on the people that we wish to stay and extending contracts and that sort of thing. That's ongoing."
