Ferraro is undoubtedly the Sharks' top defenseman logging the most minutes on the team and being tied for the lead in points amongst defensemen.
If he were to be moved to Edmonton, Ferraro would likely be a second-pairing defenseman. He will not come cheaply though as he is under contract for three more seasons at a reasonable cap hit which inflates his value.
There will certainly be other teams looking to land Ferraro but if the Oilers are able to pay the premium that the Sharks demand, then Ferraro could be the piece that puts them over the top.