Hearts' manager Craig Levein is eager to get any summer business done early and also confirmed that contract talks are progressing with on-loan Norwich City forward Steven Naismith and Cameroon midfielder Arnaud Djoum.
"We're inching forward with both of them, Peter Haring as well, but it takes time," he said.
"I don't want to be in the position of the last couple of seasons where we have had mass wholesale changes.
"The strategy has been to try to get some of our more established players signed on long-term contracts and that's been going quite well."