By Matt De Lima These buy-low candidates aren’t Purdy, but they are fantastic stashes for rebuilding managers. A week ago in the Dynasty Stock Watch, I highlighted a handful of big-time players to consider selling high on if your team is in the process of a rebuild. This was admittedly an easy exercise. There aren’t that many truly great veterans that command lots of draft capital in return. My examples were Stefon Diggs, Cooper Kupp, Leonard Fournette and Nick Chubb. On the flip side, targeting buy-low candidates isn’t as easy. This shouldn’t come as a shock but there is a plethora of underwh…