ADELAIDE, AUSTRALIA - MARCH 29: Toby Nankervis of the Tigers clashes with Cameron Ellis-Yolmen of the Crows during the 2018 AFL round 02 match between the Adelaide Crows and the Richmond Tigers at Adelaide Oval on March 29, 2018 in Adelaide, Australia. (Photo by James Elsby/AFL Media/Getty Images)

Former Melbourne great Garry Lyon says the AFL must take action on players who drop their knees into opponents.

Hawthorn defender James Sicily was offered a one-match ban for his knee to the head of Geelong captain Joel Selwood by Match Review Officer Michael Christian.

Christian graded the incident as intentional conduct, low impact and high contact.

Richmond ruckman Toby Nankervis was handed a $1500 fine for misconduct after dropping his knees into the back of Adelaide midfielder Matt Crouch.

Lyon says Nankervis should have been suspended for the incident, claiming it was an ugly look for the game.

“Why don’t we make a stand and make sure it doesn’t happen again,” he said on SEN Breakfast.

“I hated it. I didn’t like Nankervis at all. I thought it was ordinary.

“It was ugly, I didn’t like it. I hated the look of a 115 kilo big man going in with his knees on the back of Matthew Crouch.

“The fact that he slid over the top of him and didn’t actually drive into him…and maybe a rib broken or something like that meant he got a $1500 fine.

“If you’re talking about looks in footy that was a shocking look for mine.”

In the Sicily incident, Christian considering upgrading the impact to penalty to medium, which would have resulted in a two-game suspension, but ultimately declared it to be low.

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“Absolutely that was discussed. Steve Hocking and I discussed that, and it was certainly considered,” Chrstian said on SEN’s Time On.

“When we’re thinking about potential to cause, the forcefulness of the contact was the key issue. It wasn’t overly forceful.

“He didn’t drive his knee into Joel Selwood’s head. It was a more a dropping motion and a placing motion.”