What is Tom Brady worth?

I’m trying to trade for Tom Brady in a 1/2 PPR redraft league. I had Cam Newton as my starting QB but obviously that hasn’t gone well.

What is a fair trade for him with my existing team?

Cam Newton
Ezekiel Elliott
Dalvin Cook
Chris Godwin
Tyler Lockett
George Kittle
Terry McLaurin
NE D/ST
Will Lutz

Bench
Tevin Coleman
Tony Pollard
Alexander Mattison
Mecole Hardman
Vance McDonald