His upside is a mid 3 ERA pitcher with plus batting and baserunning. How that not all that high?? His downside is season lost to injury, like every other pitcher. He's already there, so it's not an upside. It's what he's been. And that downside is huge. He's not a stock where you say he's at his upside now, get rid of him. His actual value to the Cubs is very likely not equal to the return value you'd get in a trade.