He's not untouchable, however you need to remember that any kpp we draft to replace him is going to take a good 4 years to become a reliable full season player, especially as a key forward. Youngsters can cameo here and there, but it takes years to develop a player into a 95%+ gametime key forward with regular goal contributions.
Jack is the lone target in a crap side, only 20 years old and has kicked more goals in less games than his cousin Nick in their respective 3rd season in the game. In fact Jack is ahead over their entire first 3 years, Nick kicked 53 goals 37 from 50 games in his first 3 years. Jack has kicked 57 goals 38 behinds from 46 games.
Nick had a break out year in his 4th season, kicking over 60 goals, but then only 33 the next year from 3/4 of a season. It wasn't until his sixth year that he reached the standard that he is today.
He needs to improve his composure when kicking for goal, but give him more time in the gym, more stamina, more help and more delivery and there's no reason he can't be a critical component of our forward line. It would want to be a very VERY good trade to make it happen, because if we got rid of him, who would we kick it to?