MASON Wood's future at North Melbourne is uncertain with clubs believing the goalkicker could be put on the market at season's end.

Wood is contracted for next season with North Melbourne and has played 17 games this season, but has been surprisingly dropped for this week's clash with Port Adelaide.

AFL.com.au understands the 25-year-old has been raised in trade discussions with rivals as North looks at its options for this year's NAB AFL Trade Period.

Mason Wood could be on the trade table: Picture: AFL Photos

Wood will become a free agent next year, so the Roos could look to maximise his value by taking offers this year.

He is considered one of the most talented players on North Melbourne's list, and has booted 20 goals this season, on the back of his career-best tally of 22 goals from 13 games last year.

However, he has managed 54 games since joining the Roos at the 2012 national draft in an injury-interrupted career. Rivals believe he could attract a top-30 selection in a deal. 

Wood kicked two goals in three straight weeks between rounds 18-20 before managing only eight disposals in last week's record-low score against Geelong.

Wood signed a four-year contract with the Roos in 2016, estimated to be in the range of $450-500,000 a season, which will expire at the end of 2020.

The Roos look set to re-sign ruckman Todd Goldstein, with the veteran expected to knock back interest from St Kilda.

Key defender Sam Durdin and midfielder Nathan Hrovat are among the other out-of-contract Roos heading into the off-season.

In a boost, AFL.com.au revealed on Tuesday that the club had extended the contract of exciting youngster Jy Simpkin for a further two years, through to the end of 2022.

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