I guess it depends if he has felt any pain or any other symptoms from playing on Saturday. I got the impression the injury wasn't straightforward and I guess it's very difficult to know for sure when internal organs are damaged.
The other question is do we take the gamble on a player who hasn't really played much rugby recently in our biggest match of the year?
I'd probably say he is worth the gamble but it's hard to see him hitting top form in this match when you consider the time out of and the delicate nature of his injury.
I expect he will play and partner Siejka, I think he is probably worth the gamble just for his kicking game to be honest.