When it comes to offseason roster building, there basically are three recipes. There’s “Big Splash,” there’s “Let’s Get Rid of Everybody,” and there’s “We’ll Just Do Nothing and Hope Everybody Gets Better Next Season.” The Yankees (Big Splash) went out and got Giancarlo Stanton. The Miami Marlins (Let’s Get Rid of Everybody) have shed everyone from the aforementioned Stanton to the folks who rake the infield in the fifth inning. Center fielder Christian Yelich would be wise not to buy any green bananas at the South Beach Whole Foods. And then there’s your Boston Red Sox, who, for now, are going with door No.??3: “We’ll Just Do Nothing and Hope Everybody Gets Better Next Season.” Yes, the Sox are pursuing free agent J.D. Martinez and might well be setting out the chairs for the big press conference even as you’re reading this. If that’s the case — that is, if the Red Sox’ idea of moving up to door No.??1 (Big Splash) is inking Martinez and re-signing holdover first baseman Mitch Moreland — please mark me down as underwhelmed. We all can agree Martinez is coming off his best season. He combined for a .303 average, 45 home runs, 104 RBI and a .376 on-base parentage with the Detroit Tigers and Arizona Diamondbacks in 2017. He’s the bat the power-starved Red Sox desperately need. But where does he play? If it’s true he’d prefer playing the outfield, and that the Sox might need to pony up the extra dough in order to get him to accept a DH role, that’s a red flag. To begin with, it’s never a given that players are comfortable being a designated hitter, and here’s a guy who might already have reservations about the job before he even gets here. That’s not how it’s supposed to work at these meet-the-new-player press conferences. We expect the guy to be issue-free as he’s holding up his crisp, new Red Sox jersey. (Fun fact: Martinez has worn Nos. 14 and 28 in his career. No. 14 is retired in honor of Jim Rice, and incoming Sox manager Alex Cora was sporting No. 28 at his introductory presser, though he’d likely flip it to Martinez if need be.)