To answer the OP , i dont think Downie is available . We dont find this kind of players on every corners. True that the Avs have some prospects coming up who will play on the wings, but non of them can bring with Steve brings to the table .
As far as his contract goes , because of Downie's injuries since he became an Avs , i suspect that it could be easier that we think to renew his contract( at least i hope ) . Even if he does have a good season this year i believe that his injuries history could give us a chance .