The Red Sox are expanding to a six-man rotation at the end of this week, and Hill is a candidate to get a start.
"He's certainly a candidate to be that sixth starter," said interim manager Torey Lovullo. "We haven't quite mapped it out yet. I'll have some more information for you guys tomorrow as to what we're going to do moving forward with our rotation. But excited to have Rich. Somehow all leads back to Boston for him. It's good to see him."