It's going to he Hogg at 10 if Weir has to go off, can't see many other viable options in the squad, and with the bubble requirements it's difficult to add anybody else. (Fwiw, I don't really see Hogg as being all that viable at 10 either) I did have a mad thought that Greig Laidlaw could come in, he's played at 10 a few times in Japan.