BOSTON — Told you the Yankees should have signed Bryce Harper.

Look, the way this bananas 2019 Yankees season has gone, it wouldn’t shock the senses if Cameron Maybin wins World Series MVP honors, or if Tyler Wade steals home off Clayton Kershaw to score a critical run in Game 7 of the Fall Classic. Yet one foot must still be grounded in the real world when assessing this team, and that foot points to a rather obvious takeaway from Monday’s news:

The Yankees’ outfield is officially a concern.

Mike Tauchman’s Sunday night injury proved as serious as the Yankees feared, a Grade 2 left calf strain that will sideline him for six to eight weeks, and as Aaron Boone said Monday, before the Yankees’ 5-0 victory over the Red Sox at Fenway Park, “Basically, we’re probably out of time for the season.”

Aaron Hicks, moreover, spent Monday visiting with Dodgers head team physician Neal ElAttrache in Southern California, seeking a second opinion on his ailing right elbow. He, too, could be out for the duration.

Which leaves the Yankees with three relatively fully healthy outfielders in Clint Frazier, Brett Gardner and Aaron Judge; one walking wounded in Maybin; one unproven major leaguer in Wade; and one hugely expensive lottery ticket in Mr. Giancarlo Cruz-Michael Stanton.

At its best, the unit easily can serve as an asset in the Yankees’ mission to win their first championship since 2009. With Tauchman gone, Hicks’ situation discouraging and Maybin dealing with a left wrist problem that may require offseason surgery and kept him out of commission for over a week until he replaced Tauchman in Sunday’s game, however, the probability of that best-case scenario becoming reality has diminished considerably.

Stanton stands as the X factor, his rehabilitation (strained PCL in right knee) taking another positive step Monday at the Yankees’ minor league complex in Tampa. Boone expressed hope on Monday that Stanton can rejoin the big-league club next week at Yankee Stadium, giving him a scant two weeks to get ready for the postseason.

If he can do that, and if he can be Good Stanton (think June or August of 2018), then myriad other nuances of this setup can be overlooked. If he’s bad Stanton — like, just to pick a random month, October of last year — then he becomes part of the problem.

Gardner has more than justified the Yankees’ decision to bring him back for $7.5 million, yet it bears reminding that the Yankees intended to play him primarily in left field, providing him sufficient rest out of respect for his age (currently 36) and the Yankees’ overall depth. Instead, Gardner likely will enter the postseason as the Yankees’ everyday center fielder, his primary backup there a banged-up Maybin who hasn’t manned the position at all this year, with 50 games in center field each of the prior two seasons.

“Right now, I feel pretty good,” Maybin vowed Monday, and the Yankees must hope that doesn’t change for the worse.

Frazier’s offense in the majors earlier this season earned him much respect, and his defense earned him an extended stay with Triple-A Scranton/Wilkes-Barre. Wade has yet to prove that he can contribute at the big-league level.

The bright side? At least Judge, with a .305/.345/.695 slash line in his past 20 games entering Monday’s action, has ended his slump that created extensive panic in The Bronx.

Last winter, I did advocate, repeatedly, that the Yankees make a run at the free agent Harper, who has put together a solid season for the Phillies and, particularly relevant, has played in 138 of his team’s 142 games.

By cashing in handsomely on such low-risk acquisitions as Maybin and Tauchman, the Yankees pushed away the Harper question, much as Gio Urshela’s success turned Manny Machado into a non-thought. Some more rewards must be redeemed, though, in order for the Yankees to attain full vindication.

Can Stanton lead that redemption charge? Can Maybin keep the pain away? Can Gardner defy Father Time for just another seven weeks or so?

The questions have grown louder, the answers more challenging. Here come these 2019 Yankees, ready to try to leap more hurdles. For sure, you can’t turn away, right?