Here's the BBC's clip for the record.
https://www.bbc.co.uk/sport/football/56907307
Yes - as I say I've seen it serval times.
Well they didn't did they. Chilwell was nowhere near clattering Balbuena as he'd already pulled out of the "tackle" (or was turning away because the ball was flying past him).
So what - in fact the the only scenario where it might have been Balbuena rather than Chilwell sanctioned was the scenario that actually occurred. Had Balbuena's leg been in any other position and there had been contact between the two of them with the ball long gone then it would have been a foul against Chilwell.
Actually, his foot spanned the lower thigh, knee and upper calf. Chilwell could have ended up with a serious injury if his leg had been more side on or if Balbuena had made contact lower down.
That a player might have been injured or was actually injured doesn't necessarily indicate that a foul has been committed, let alone a card offence. Players can, and do, get injured all the time in perfectly legitimate challenges.
This is why I said it was dangerous.
Well I, and the officials who over-ruled the card, don't agree. There was nothing inherently dangerous (in terms of the laws of the game) in what Balbuena did. He legitimately kicked the ball, his follow through was natural and not excessively high. His only issue was that Chilwell's leg happened to be in the place where his natural follow through took him. He did nothing wrong even though the unfortunate set of events could have ended with one, or both of them injured - but to reiterate, just because a player might have been (or even is) injured in a collision doesn't mean it is an offence or considered to be dangerous under the laws of the game.