Exciting young Gold Coast forward Izaak Rankine has signed a contract extension before he has managed to play a senior game.

Rankine, a dynamic, medium-sized forward, has signed a two-year contract extension, which will take him through until the end of 2022.

The move comes as it emerged Jack Martin might not play again this season after having surgery on a finger tendon on Monday. He will miss at least a month but will be reassessed in coming weeks for a clearer picture on his recovery and the likelihood of a return this year.

Martin is out of contract at the end of the season and is being pursued by Carlton, the Western Bulldogs and St Kilda.