Tom Brady is moving on.

Or, more precisely, moving out. One day after signing a contract extension, the New England Patriots quarterback and his wife, supermodel Gisele Bündchen, placed their Boston-area home on the market, according to NBC Boston and others.

The house, which was built in 2013 and sits on five acres next to the ninth hole of The Country Club in Brookline, has five bedrooms, a three-car garage, a gym, a spa and an organic herb and vegetable garden. There’s also a barn-inspired guesthouse with a yoga studio complete with “walls that open up for natural air circulation” and “provide a Zen-like experience,” according to Zillow. It can be yours for $39.5 million, and the Boston Herald reports that prospective buyers already have queued up.

Is there any significance to the listing? Well, that’s not yet clear. Brady is set for this season at age 42, and in the NFL, that’s about all anyone can say.

How does Tom Brady do it? It starts with science and ends with something less precise.

It has been a significant few days for Brady, whose birthday was Saturday, followed by his news of his contract extension surfacing Sunday. He and the Patriots agreed to a two-year extension that runs through the 2021 season. That increases his 2019 income by about $8 million, to $23 million. It adds two additional seasons at prospective salaries of $30 million in 2020 and $32 million in 2021, according to NFL Network. Total value? It could be $70 million, although adjustments are always possible and Brady and the team usually take things year by year, especially since Brady turned 40. The contract, as ESPN’s Jeff Darlington reported, “paves the way for the family roots in the Boston area to loosen."

That may be why Brady was fairly cryptic Monday when talking with reporters. He didn’t seem exactly giddy with delight at entering what he called “uncharted territory” because of his advanced age.

“I mean, it’s really the reality for most guys in the NFL,” Brady said. “I don’t want to think that I’m different than anyone else. Football’s a tough business. It’s a production business, and I’m ready to go this year and that’s really what matters.

“It’s a unique situation I’m in. I’m [in the] 20th year with the same team and I’ll be 42 years old, so pretty much uncharted territory I think for everybody, and I’m going to go out there and do the best I can this year and see what happens.”

That seemed to be his mantra.

“It is what it is,” he said. “That’s a good line, so whoever said it, it’s very pertinent. Like I said, there’s a lot of guys who have one year left on their contracts, so the situation — I’ve got one year to go, and we’ll see what happens.”

Perhaps his enthusiasm was tempered by the fact that money has never been his primary motivation. Asked recently by Jimmy Kimmel why he isn’t the highest-paid player in football, he replied: “I think the thing I’ve always felt for me in my life, winning has been a priority. And my wife makes a lot of money. I’m a little smarter than you think. Actually, it’s a salary cap. You can only spend so much and the more that one guy gets is less for others. And for a competitive advantage standpoint, I like to get a lot of good players around me.”

In the meantime, Patriots fans can be comforted by the fact Brady/Bundchen often relocate their family. They moved from Back Bay, selling that home for $9.2 million in 2012. They built a mansion in Brentwood, Calif., then sold it for $40 million in 2014 to Dr. Dre. They’ve moved a couple of times in New York City, most recently into a $25 million place in Tribeca. Recently, according to the New York Post, they have been house-shopping in Greenwich, Conn., and Alpine, N.J. Could Gisele and the couple’s two kids decamp to one of those areas, with Brady commuting this season?

Anything is possible and, despite the contract extension, there’s a lot that could change. Brady, whose other mantra is “pliability,” has ensured that he will have plenty of that.

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