Alexander Mattison had Surgery today!?

Mattison was sick. Turns out it was his Appendix and he had a successful surgery. So, how long will he be out for? I’ve seen comments that he could be out for 3 weeks at least. Should I even keep him rostered with the uncertainty when he will even be back? He might be back after the fantasy playoffs. I could drop him and use that roster spot to get a backup for another position like TE. Also, Viking RB fantasy schedule is bad so I don’t really want to get any of the other Vikings handcuffs in Boone and Abdullah. It could be a split with them if Cook went down, with Mattison we at least knew he would get most, if not all the work like Cook.