Henry issued a detailed statement on the matter. "We" was his pronoun of choice.
https://www.mlb.com/news/john-henry-statement-on-trading-mookie-betts.
“I think we made legitimate offers over three offseasons,” Henry said. “We made it clear to Mookie, and I made it personally clear one-on-one, that we wanted to see him in a Red Sox uniform for the rest of his life, if possible.”
“We cannot shy away from tough decisions required to aggressively compete for World Series. That is what led to this trade,” Henry said. “Free agency plays into many decisions clubs like ours have to make. Today’s players spend years in the Minor and Major Leagues earning the right to be paid in a free market, earning the right to make choices. They make significant sacrifices to get there and they deserve what they receive. Clubs also have choices to make as well in this economic system.”