Some very smart people in the Boston Celtics front office are putting a plan together for the offseason, and if there's one hallmark of the Brad Stevens era , it’s that people like me can never figure out what they're actually planning.  It’s like I’m Eleanor Shellstrop from The Good Place walking into Michael’s office and him saying “oh, I forgot, you don’t see in nine dimensions.”  Still, it’s worth the shot to figure out who the Celtics might be looking at . So let’s dive into it, shall we?  As a reminder…  Boston’s salary situation:  Tax Line: $201 million First Apron : $209 million Second Apron : $222 million  Fully Guaranteed: Jayson Tatum $58,456,566 Jaylen Brown $57,078,728 Derrick White $30,348,000 Sam Hauser $10,848,215 Payton Pritchard $7,767,857 Hugo Gonzalez $2,923,560 Luka Garza $2,801,346 Total $170,224,272 Team Options: Baylor Scheierman $2,744,040 Neemias Queta $2,667,944 Jordan Walsh $2,406,205 Amari Williams $2,150,917 Max Shulga $2,150,917 Ron Harper Jr.…