Long, 32, is in the last year of his current deal and it is believed St Helens will only offer him a one-year extension, with the former Wigan and Widnes half-back looking for the security of a two-year-deal.
“Obviously I’d like to stop at St Helens to finish my career but if another club comes in with a two-year deal I’ve got to consider it,” he told the BBC.
Long joined Saints from Widnes in 1997 and has won a record-breaking three Lance Todd trophy’s for his performances in the Challenge Cup finals of 2001, 2004 and 2006.
He added: “I’m enjoying my rugby and feel pretty fresh. I don’t miss any training sessions so I’m feeling good.
“Hopefully I get can sort it out and finish my career at St Helens.”
It is believed Long is meeting with Saints chairman Eamonn McManus at the end of May to discuss a new deal.
“The ideal scenario will be Eamonn comes back at the end of the month and offers me a two-year deal, but I can’t see that happening. We’ll see what happens.”