The Power endured a roller coaster ride in 2010, winning five or their opening seven games before embarking on a nine-game losing streak, which culminated in the departure of long-serving coach Mark Williams.
Port Adelaide has farewelled premiership heroes Tredrea, Brendon Lade, Josh Carr and Peter and Shaun Burgoyne over the past two years and will start next season with the second-youngest list in the competition.
"We're not in that top-four group and I don't expect us to challenge for a premiership in the next couple of years, but after that certainly from the outside looking in we've got some really good signs," Tredrea said on Thursday.
"To hold onto Travis Boak and then you've got Robbie Gray, Jackson Trengove and Hamish Hartlett…we just need to get games into these guys. We've got some good players coming. We've just got to give them time and be patient and nurture them.
"Gary Ablett took three or four years. Everyone used to criticise his work rate, but no one criticises him at all now apart from Geelong fans, who lost him."
Tredrea has spent the best part of the last 20 years at Alberton, having risen through the junior ranks with the Port Magpies in the SANFL but will spend some time away from the club next year.
The 31-year-old recently accepted a role co-hosting a breakfast radio show and with three young children at home said he would not have time to fill an official role at the Power next season.
"When I started it wasn't about having a Port person looking after me," Tredrea said.
"I had Billy Brownless…and spent a little bit of time with Craig Bradley. There were a number of people that helped me out, so if I can offer that and they want that advice I'm there to talk to."
