And Cronulla have also ruled out making a play for the controversial ex-Test centre.
“I’m not sure why it’s come up again,” Stone said. “We have well and truly moved on from that. We don’t have a cent left in the cap.”
The Eels are set to formally release Tahu from his contract in the coming days.
Last week, club legend Andrew Johns urged his former club to meet with the dual international.
“Timana’s a footy player and if you’re in the wilderness and having a tough time the best thing you can do is get amongst your teammates and play football,” Johns said.
“I don’t know what else Timana is qualified to do. I’d love to see him get back and be playing football and get into a good head space.”
But with no lifeline from the Knights, the likelihood of Tahu playing in the NRL this season appears remote.
Cronulla played down reports they would swoop on Tahu.
“At this stage, we’re not going down that path,” Sharks coach Shane Flanagan said.