I'm not so sure we can expect McFadden to miss more than one more week. Use Reece while you can, as I will be this week, with confidence.
Remember when Matt Forte supposedly had a HAS? He missed one game.
Don't worry about that, though. Pick up Reece if you still can and plug him in until DMC or Goodson returns. Whether it's one week or more, he can help you win a game.
And isn't one game usually the difference between making the playoffs or not, or the difference between seeds?
Hasn't it been officially confirmed that McFadden and Goodson both have HAS? Forte's was always speculation and was quickly (within a few days anyway) refuted by the Bears IIRC. I don't wish injury upon anyone but historically speaking it jives for McFadden. Don't know much about Goodson; he could be back sooner rather than later.
I'm not a doctor, but you can check with The Champ or FBG's Dr. Jene Bramel on this one.
Apparently, McFadden has the same injury as Forte had, and technically it's not a HAS.