Sanchez is an awful pitcher. He isn't anything more than a long reliever or mop up duty guy on a bad team. This guy isn't worth f*** all in a trade so put him in the pen where he belongs and let him get used to it.
He can blame blisters all he wants, but at the end of the day he has a 5BB/9 which will never cut it as a starter, and makes it hard to do as a reliever unless you're striking out a pile of guys which he never will. He is a legitimate non tender candidate at the end of the year as far as I'm concerned, I've never understood the length of rope he's been given by this organization under two different regimes.