How serious are the Boston Celtics in the reported Jaylen Brown-Kevin Durant tradetalks?

According to The Athletic's NBA insider Shams Charania, the Boston" Celtics offered (Jaylen)Brown,

Derrick White and a draft pick to the(Brooklyn) Nets for(Kevin) Durant.

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The proposal was reportedly rejected according to Charania,

Who went on to say that" Brooklyn has asked Boston- in any proposal - to include Brown,

Defensive Player of the Year Marcus Smart, draft picks, and potentially one more player"

Following that curiously timed leak, multiple NBA media outlets have since claimed

The Celtics are an emerging threat to trade for the Net's star forward. Although,