Wingard played 21 games but could only manage 22 goals, his lowest tally since his debut year in 2012.
King jumped on SEN on Monday morning and spoke to Gerard Whateley about Port Adelaide’s off-season plans, and wondered if the club had the guts to put up Wingard for trade.
“I think you walk in to match committee today and say here are six names that I just want out of the place, what can I get for these guys?” King told SEN’s Whateley.
“And then the more you digest what you’re talking about, you end up pairing that back to two or three and then it becomes one or two and then it becomes the ultimate decision.
“Are we brave enough to trade Chad Wingard? He’s the player. He’s the one.
“He’s had a pretty disappointing year by his own admission. He’s kicked 22 goals for the year in a low scoring team, he couldn’t make it happen.
“I think they’re obligated to put Chad Wingard up (for trade) personally.
“He’s of the right age bracket, he could go to a good club and actually become a high-quality player.”
King also touched on Jared Polec’s future, with the winger set to depart to North Melbourne on a five-year deal.
The two-time premiership player believes the Power will need to go and find a replacement for Polec right away, given there isn’t another player on their list that plays a similar position.