The Red Sox agreed to terms with free-agent power hitter J.D. Martinez on Monday, according to several reports. But as of Thursday afternoon, the team had yet to officially announce the signing, and an introductory press conference has reportedly been delayed for two days now. It all begs the question: What’s the holdup? The Boston Globe’s Dan Shaughnessy, who’s been in Fort Myers covering the team since camp opened, asked the question on Twitter on Thursday, while the Sox were opening their spring slate of games against Northeastern. With Shaughnessy, one can never exactly tell whether such a question is rhetorical conjecture, or whether it’s an informed opinion taking the shape of a question. One reporter who’s been monitoring the situation closely has been NBC Sports Boston’s Evan Drellich. On Wednesday, Drellich reported that the issue delaying the official signing was “logistical,” with the Red Sox “awaiting the results of Martinez’s medical exam(s), which can sometimes include different opinions from different doctors in different places.” Drellich reported that as of Wednesday, there was “no evidence” that the Red Sox had discovered something in the medical exams that was alarming.