Well for one, this team will still be rebuilding next season. Erick Fedde is only signed through next season.
If he keeps this up, through this season and next season as a front of the rotation type starter. The White Sox, in no way shape or form, are going to resign a 33 year old SP to the contract that his performance will demand.
If he keeps this up for this season only and then stinks next season, your value on him will crater and then you get nothing and he still doesn't help this franchise moving forward.
The only logical outcome here is to hope he keeps this up over the next two months, and then he is traded for a nice package of prospects that will help this team in the future when they expect to be good again.