In a puzzling epilogue to Melbourne's 22-6 preliminary final win over Cronulla, the rugby league Immortal-in-waiting admitted retirement wasn't out of the question with a fifth grand final win next Sunday.

Quizzed on whether he was serious about his stance Smith said he still intended on playing on in 2019 but wouldn't rule out changing his mind.

"I don't know, if we were to win it. If we were to go and play well next week, I don't know. You'd consider it," Smith said when asked if there would be a temptation to retire with Slater.

"Maybe. I don't know.

"I don't have a contract for next year yet ... We'll just get through the week first and see what happens."

"Players finish up all the time and new players come in and you start writing about them.

"I've got all intention of going around next year, you guys posed the question to me. If we were to win would you consider it?

"I don't know, we win first and we'll see what happens. At this stage I want to play on.

"Does that clear it up for you? Clear as mud."

The comments come after Smith has long indicated he wanted to play next season after his shock decision to retire from representative football just weeks out from State of Origin earlier this year.

Reports also emerged this week he was close to finalising a deal with the Storm for next year that would likely see him become the first game to reach the 400-game mark.

The old firm of Smith and Slater stood tall on Friday night in their last game together at AAMI Park, combining for the try just before halftime which put the game beyond doubt.

"I was a bit nervous about the outcome (of the preliminary final) for Billy," Smith said.

"This week I've been having small moments to myself on the training paddock where I'm doing extras with Bill.

"I've been thinking I would love another chance to have another week on the paddock with him."

Australian Associated Press