Looking at the replay Ryu is very lucky his leg wasn't planted when he get hit.
Also it's better to get hit on the inside of the knee than the outside. I would be cautiously optimistic.
Generic knee inflammation is the best possible outcome for Bichette. If there's any swelling he's probably unavailable until that gets resolved.
Long term if the same knee keeps getting sore, he needs to keep an eye on his meniscus.