Iheanacho challenged the Reds defender from a Leicester goal kick but suffered a nasty fall on his way down.
The Foxes forward thankfully didn't suffer a serious injury and carried on playing after a couple of minutes of treatment at the end of the first half.
But the incident left Jamie O'Hara outraged, the talkSPORT host insisting Matip should have been shown a red card for his part.
"Matip should be off. I hate players that lean over and players go over the top, could break his neck. Refs need to stamp it out," O'Hara tweeted.
Although Iheanacho was fine afterwards, the incident is likely to leave a sour taste in the mouth of Brendan Rodgers.
Leicester full-back Ricardo Pereira suffered a break in his leg during their Carabao Cup defeat to the Reds on December 22 - the injury coming as a result of Liverpool youngster Tyler Morton's reckless challenge.
But Leicester are looking good to exact revenge on Jurgen Klopp's men with Ademola Lookman's strike putting the home side in front.
And stay tuned for more of O'Hara's thoughts on the Sports Bar at 10pm.