According to ESPN's Adam Schefter, multiple sources believe Brady will play. However, his status for 2018 isn't yet certain.
Schefter's report comes after Brady chose not to attend the opening of New England's offseason program this week.
One source told Schefter, "My money would be on him playing football for the foreseeable future, but what goes on away from the football field, I don't know. I don't know."
Another source hedged optimism with uncertainty as well, saying, "I believe he's going to be there. However, having said that, we're dealing with a human being. Things can change. But I do believe he will be playing."
Michael Giardi of NBC Sports Boston later reported he spoke to two of Brady's teammates, who noted they've had talks with the quarterback during the offseason and that Brady "never indicated he wasn't playing/retiring."
Schefter's report regarding Brady means there is a lack of clarity surrounding two of New England's best players, as tight end Rob Gronkowski has yet to commit to playing in 2018 as well.
Per Schefter, part of Brady's decision to skip team activities is so he can spend more time working with personal trainer Alex Guerrero.
Although Brady is approaching 41 years of age, he is coming off a highly productive season that saw him net his third career NFL MVP award.
He completed 66.3 percent of his passes for 4,577 yards, 32 touchdowns and eight interceptions.
Brady also threw for 505 yards and three touchdowns in a Super Bowl LII loss to the Philadelphia Eagles.
In an interview on Westwood One before the Super Bowl (h/t Tom Schad of USA Today), Brady was definitive in saying he would play in 2018.
New England will be in a difficult spot if Brady retires, since the only other quarterback on the roster is journeyman veteran Brian Hoyer.
The Patriots own the Nos. 23 and 31 overall picks in the 2018 NFL draft, meaning they may have enough capital to select an heir to Brady's throne if a quarterback falls or they trade up.