KEY FORWARD Levi Casboult has turned his back on free agency, signing a two-year deal that ties him to Carlton until the end of 2019.

The 27-year-old free agent attracted some interest from rival clubs looking for a key forward but the Blues were always confident he would stay.

Casboult kicked 34.18 in 2017 and is regarded as one of the game's best contested marks.

His accuracy in front of goal has been a weakness but he has improved in recent seasons under the tutelage of goalkicking coach, former Collingwood and North Melbourne forward Saverio Rocca.

Carlton's football boss Andrew McKay told the club website the contract extension was reward for Casboult's dedication.

"Levi has made pleasing improvements across his game this season, and has committed himself to continually developing as a key forward," McKay said. 

"He has been leading a very young forward line this year, and provides a strong target for us."

Casboult played every game this season to take his career tally to 94 games and 105 goals.

The Blues will expect him to play a key role up forward as youngsters Harry McKay and Charlie Curnow develop.