The Boston Celtics and Toronto Raptors have joined the Philadelphia 76ers, Brooklyn Nets and Miami Heat in making a "courtesy call" to the Houston Rockets on a James Harden trade, sources tell Brian Windhorst of ESPN.

The Milwaukee Bucks even had an internal conversation and ran it past Giannis Antetokounmpo before deciding not to pursue Harden at all.

There are approximately seven teams in the East that can realistically talk themselves into having an opportunity to reach the Conference Finals, which puts the possibility of a Harden trade for one of them a balance of power shifting move.