The 30-year-old Australian is out of contract at the end of season at the Halliwell Jones and is considering a return to the NRL.
“I’ve got a few options to weigh up,” he told BBC Radio Manchester.
“Hopefully within the next two-to-three weeks everything with the contract will be sorted and one way or the other we’ll come up with a decision.”
King joined the club from Australian side Melbourne Storm in 2007 and has become a popular figure at the club.
“I’ve been very open with Smithy [head coach Tony Smith] but the owner as well, and I get along really well with those guys,” he added.
“They know of my desires next year and they also know that I’m an Aussie and at some stage I’m going to want to go home.
“Whether that is next year or whether I sign another contract with Warrington and then go home, I still don’t know.”