All three players have contributed to Palace's success this season.
Parish told the South London Press: "We're going to leave it until after the last game, let us focus on that, then we'll start to go through it all.
"Obviously I'm on record that Julian will be offered a contract. We'd like Marouane to stay.
"And we've got to have a conversation with KG. He's done ever so well for us and never lets us down. It's very likely that we want to retain him and that he'll be offered something as well."
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