Will Tom Selleck Return as Frank Reagan in ‘Boston Blue’?

At this point, there’s no official confirmation that Tom Selleck will return as Frank Reagan in the Boston Blue spinoff — but the door is definitely open.

Recent interviews suggest a mixed picture:

Selleck has said he’s “open to suggestions” because he loves the Frank Reagan character, but he’s also expressed hesitation about continuing to play him long-term.
In a 2025 interview, he specifically said, “I don’t know if I would do ‘Boston Blue.’ That’s another show,” adding that he wants to preserve Blue Bloods’ legacy rather than automatically continue the role.
Meanwhile, Donnie Wahlberg has remained optimistic that Frank Reagan could eventually appear if the timing and story are right.

So far, Boston Blue has already brought back several Reagan-family characters from Blue Bloods — including Erin Reagan, Maria Baez, and Joe Hill — but Frank Reagan himself has not appeared onscreen yet