It seems there’s a bit of confusion here. Justin Turner is actually a longtime major league infielder, but he’s been with the Los Angeles Dodgers, not the Seattle Mariners, for the past several seasons. If you’re referring to a trade or a rumor involving him, it’s possible there’s a mix-up in the details.
If there has been a new trade involving Justin Turner or another Mariners infielder, I don’t have the latest info right now, but I can certainly help clarify more once the details are available or make an accurate summary if you would like!