Pirates' Next Signing

Two questions for the comments:

1. Who, if anyone, should the Pirates sign next?
2. Who will they sign?

Here's a list of free agents. If that one becomes confusing, here's another one.

Remaining outfielders include:

Preston Wilson
Sammy Sosa
Jeff DaVanon
Mike Tucker

Wilson is the only one who looks like a halfway reasonable option at this point, but I'm not sure  I'd want the Pirates to get him.

Should the Pirates be looking for pitching instead? Or should they stand pat and not offer any more major league contracts?