Davis would not have leaked he wants a trade now if he wanted Boston because everyone knows Boston cannot trade now.
Seeing the decline in Horford, and nothingness being given by Hayward and the difficulty in leading a team of young guys, and wanting to play with other superstars(the NBA norm now) I can see Irving questioning signing long term.
Danny has tough decisions to make. really tough ones.
Me, I think I would consider trading Kyrie to NYK for their pick unprotected, and would drop the Davis pipedream and look to return to the team that went deep into the playoffs last season.
Kemba is going to be available, multiple bigmen, there is no need to be married to Kyrie and Davis 100% at this point in time(when there is no guaranteed assurances from either) to the point when you destroy what you already have.
all being said, IF Kyrie wants to stay, and he and Davis want to play together here, then Kyrie can take a 1 year extension now, we can trade, then Davis and Kyrie can both be resigned.