My guess is the Sox have a pretty good idea what Eovaldi's arm looks like right now. They could be wrong. It wouldn't be the first time, but if we are going hard for him, like it appears we are, I'm pretty certain they have confidence his arm is fine.
Certainly, I worry more about Eovaldi's arm (with 2 TJ surgeries) than say, Porcello's, but I'm trusting DD and his crew on what they see.
If we don't get Eovaldi, we'll probably get someone else with a good outlook.