I too find it odd no one claimed Clevinger. The MLB went through thousands of texts and emails between him and the alleged victim, spoke to dozens of people they both know and from what it seems, did a very thorough investigation and claimed there was no merit to it and cleared him to play. He's not facing any criminal charges, and in the US at least, you are innocent until proven guilty. It appears no criminal charges suggest that there is not enough evidence to push forward. Not sure what type of teammate he is, or what type of distraction it would bring to a team.
His ERA+ is 134 and he's out performing his FIP by about a run but he keeps the ball in the yard and doesn't strike a ton of guys out. Statcast data is good not great.