More than likely, the need for a replacement for Loretta now and Ensberg after the season is over was too big to allow this to go untapped as a need. I think they need a CF as well, so either now or in the offseason they can go after that need as well. Face it, with Pence putting a stranglehold on the #2 spot in the lineup, the need for a middle of the lineup producer is still there and you need that from a corner position (3rd or RF). I'm thinking the CF will more than likely be a leadoff guy. Mark Loretta hitting #5 is not the best situation for this team. Loretta also has a good market going right now, so they'll need to replace him. Ensberg has no market, so the likelihood is a lesser trade or even a release of Ensberg this offseason. They need a middle of the lineup bat when Pence comes back and it will be good to see what Wiggington can do hitting behind Berkman and Lee and split some time with Lamb.
As for Wheeler, well he's a reliever. Guys like Albers, Estrada or Guiterrez may prove to be guys who can replace him. It also means, to me, that Qualls is going nowhere, just like Lidge. Looks like Loretta and Wheeler will be the fodder this season to make trades. I don't believe Jennings will be traded, but it all depends now what teams are willing to offer for him. There has to be a trade for Loretta close, because if he's not traded, then Wiggington and Ensberg are redundant and Purpura's trade makes no sense.