So much for that lack of MerDer conflict. Derek will soon start his Alzheimer's trials on Grey's Anatomy, but he won't be bringing our favorite resident along for the ride.
According to TV Guide, he's not going to change his mind, either.
Working with Meredith is just too big a complication for Derek, given the subject matter at hand. He's still concerned that her being on the team will hurt his judgment.
Thus, he chooses another resident, and that decision will "turn Dr. Grey into a green-eyed monster." Yikes. Guess that's the downside of working with your loved one ...