COLLINGWOOD defender Matthew Scharenberg has resisted overtures from Adelaide, signing a new three-year deal to remain at the Magpies.

AFL.com.au reported last week that Scharenberg was on the verge of re-signing with the Pies, and the extension, which was confirmed on Thursday, will keep him at the club until the end of 2018.

The 19-year-old, pick No.6 in the 2013 NAB AFL Draft, is an important part of Collingwood's developing defence and he showed his promise to average 15 disposals in playing four of the last games this season.

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Scharenberg made his debut against Melbourne in round 18 after recovering from a torn anterior cruciate ligament in August last year.

He also had surgery to remove the sesamoid bones in both of his feet at the start of 2014, his first year at the Magpies.

"Matthew has not enjoyed an easy transition into AFL football. He has had to move out of home, shift interstate and then overcome two serious injuries in his first two seasons with us, a scenario that would test the resilience of a hardened veteran," Collingwood list manager Derek Hine said.

"What he showed us throughout that time, when he wasn't playing, was a dedication and commitment to his club and his career.

"To draft Matthew when we did made it clear that we had a very high opinion of him. And we saw glimpses of his poise and game reading ability when he broke into the team late in the season.

"But he isn't just a fine prospect. He has proved to us that he is also a driven and mentally tough individual who has the grit to complement his natural talent.

"We're very pleased that the very exciting next phase his career will unfold with Collingwood."

Along with his renowned work ethic, Scharenberg's ability to read the play off half-back was one of the key reasons as to why the Magpies selected him with their first-round pick in the 2013 draft.

The Magpies were intent on giving their young players a chance to prove themselves at senior level in 2015 and are hopeful Scharenberg, Brodie Grundy, Tim Broomhead Ben Kennedy, Taylor Adams, Tom Langdon, Jonathon Marsh, Jordan De Goey, Darcy Moore, Brayden Maynard and Nathan Freeman, who is coming out of contract, are the nucleus to drive them to their next premiership.