JAMES Harmes will be upgraded to Melbourne's senior list in 2016 after agreeing to terms with the Demons to extend his contract by one year.

Harmes broke through in 2015 to play eight of the final nine games after making his debut in round 15.

The 20-year-old kicked two goals in the final game of the season in the Demons' win over Greater Western Sydney, matched up early on Heath Shaw, and impressed throughout with his attack on the ball.

Melbourne football manager Josh Mahoney said Harmes showed he was comfortable at AFL level by season's end and he shaped as a good prospect.  

"He provides us with some flexibility. He has the attributes to play through the midfield but also his marking ability makes him a dangerous option as a forward," Mahoney told AFL.com.au

"He plays a style we want to play. He is hard at the ball and competitive."

After being rookie listed in 2014, Harmes had to overcome a punctured lung suffered midway through his first season to string together a series of consistent performances.

Noted for his aggressive style, Harmes grew up barracking for the Demons and played for the Dandenong Stingrays in the TAC Cup.

He averaged 11 disposals and three tackles in his eight games, with an even split between contested and uncontested possessions.

Meanwhile, Jayden Hunt has also been given a one-year contract for 2016.

Hunt, who has yet to make his AFL debut, has battled injuries in his first two seasons.

But the 20-year-old has displayed genuine promise as a dashing utility when he has played for Casey, particularly in a patch of matches in the latter part of 2015. 

Mahoney told the club's website Hunt had earned his spot on the list for next year.

"Jayden had an interrupted start to his AFL career, suffering medium to long-term injuries in both years," Mahoney said.

"His form at VFL level over a block of four to six weeks this year showed us that he's got capabilities to become an AFL player.

"He deserves an extra year on the primary list."

Hunt was selected at No.57 in the 2013 NAB AFL Draft.

Melbourne had a successful trade period recruiting Essendon's Jake Melksham, Collingwood's Ben Kennedy and Greater Western Sydney's Tomas Bugg as well as moving up the draft order to take picks No.3 and No.7 into the draft.