North Melbourne is hopeful it can advance contract negotiations with midfielder Levi Greenwood over the weekend and secure the uncontracted Roo as rival clubs circle.

Greenwood, who enjoyed a career-best season in 2014, has attracted interest from Richmond and also been linked to Collingwood since coming out of contract.

Kangaroos football manager Geoff Walsh said the club hadn't been able to satisfy the terms requested by Greenwood and his manager Liam Pickering, but they would continue talks.

"We don't feel we're far away, but we understand the competitive tension in the market while he remains officially uncommitted," Walsh told NAB AFL Trade Radio.

"Hopefully in the next 48-72 hours we get to a stage where we talk with Liam Pickering again, and are we able to come to terms with their requirements and where we feel we can go.

"We will endeavour to keep working on that and hopefully by the time the weekend unfolds we've got a position."

The Kangaroos unveiled free agent recruit Jarrad Waite on Friday in a move that will boost their tall stocks.

The move to secure the former Carlton spearhead has clouded the future of North Melbourne's fringe talls, with Majak Daw, Robbie Tarrant and Aaron Black all battling for opportunities.  

Walsh, however, said the club was not looking to move any on, with Tarrant (leg) and Black (shoulder) shaping as new recruits in 2015 after injury-effected seasons.

"We think Robbie will have a good summer – the post-operative diagnosis is good, and we think he's got the versatility to play [forward] or back," he said.

"'Blacky' played under some significant difficulty during the year with a shoulder injury.

"He'll have that repaired and we admired him so much for his willingness to get out there each week.

"Majak is still a developing player … he's still very much a player we will put a lot of time into."

Walsh said contracted half-back Aaron Mullett was a required player, while the club would help facilitate a move for midfielder Liam Anthony if there was interest from rival clubs.