thats a tough decision, but i think i would make that trade. in an NL only league, if wolf comes back and is fresh he could be a valuable starter. and turnblow, well who knows whats going on with him..
on the other hand, wolf is coming back from tommy john so the first instinct would be to stay away, but since turnbow is essentially useless for you right now and we're coming down the home stretch of the season, i think i'd still pull the trigger on the deal. people might disagree and say it's too risky, but since ur essentially getting wolf for nothing right now, it's not risky at all, if wolf disappoints you can find someone else on the ww, no big deal.
btw, this should go in the trade questions thread b/c that seems to be the main focus, ur trade offer.