It was a red card tackle. I don't think kung fu is allowed in football but I could be wrong. I will get slated for saying this but that's my opinion and everyone that knows me also know that I won't give our players the benefit of the doubt just because they play for us.
Depends how you see it, he went up to win the ball in the air, didn't even have eyes for Jo, but for some reason he stuck his leg out (maybe to protect himself from getting bumped in the air). I dont really think it was an intentional kick.
That being said, I wouldn't be surprised if he was red carded, had the ref had a clear view.
He had his moments of shakiness today, he's obviously still learning how to judge ariel balls - the same type of error lead to his injury.
Not to devalue his contribution at all, he's a brilliant up and coming defender - but Carra makes him look better than he is. Another season or two and he'll have it perfected I'm sure.