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PROMISING Adelaide midfielder Matt Crouch has signed a three-year contract extension.

Crouch, 20, has committed to the Crows until at least the end of 2018.

He has played 25 senior games since being taken with selection No.23 in the 2013 NAB AFL Draft.

The signing is a big boost to the Crows, who lost superstar midfielder Patrick Dangerfield to Geelong on Monday.

As well as Dangerfield, the Crows traded their third-round draft pick, currently No.50, to Geelong in exchange for picks No.9 and No.28 and youngster Dean Gore.

Crouch will now look to step up in Dangerfield’s absence. He played 17 AFL games this year, averaging 21 possessions, four clearances and three tackles.

He won the Mark Bickley Award for emerging talent at the Crows club champion presentation last month, and was also a Rising Star nominee in 2014.

Crouch said he was excited at signing on.

"I love the club and I think we showed this year that we’re on the right track," he said.

"It was great, especially for young players like myself, to play finals and that experience has pushed us to get better.

"I’m really happy to get the deal done, and I’m looking forward to working hard with the boys over the pre-season and continuing to improve as a player."

Adelaide head of football David Noble said Crouch was a key signing.

"We see Matt as being an integral part of our midfield for the next decade," Noble said.

"Matt has showed that he’s more than capable of playing at AFL level and we’re excited to see him develop, along with our core group of young players, over the next few years."