In: McKernan, Out: Puopolo (I know, shutup)
You didn't really need to make this trade this week unless you need McKernan to start for you.
McKernan doesn't get a price rise for a couple of weeks, so you could have waited another week to evaluate his performance, make sure he doesn't pick up an injury, and make sure he's named next week and Puopolo isn't. Puopolo must be pretty close because he's an emergency this week.