Langley has spent his entire career with the Bulls, but the West Yorkshire club will not be offering the 29-year-old a new contract after his current deal expires at the end of the season.
"I've got to speak to other clubs about my future and I'm negotiating with a few at the moment," he told the Bradford Telegraph and Argus.
"We'll see how it goes after this weekend but there's nothing imminent and it's not something you can rush into because it's a massive decision. But I'd like to go on for at least another three to four years at Super League level.
"I'm still playing well and I'm in good shape, so I see no reason why I can't do that. Hopefully I can get as many years out of the game as I physically can."
Bradford bring their Super League campaign to a close this afternoon with a home fixture against Huddersfield Giants, who won the League Leader's Shield for the first time in their history last weekend.