More likely than not Lou will trade no one.
I’d still like to comment on your perceived value of our potential trade pieces. I’ll grant you Mayfield should net a late first though no need to protect it since the acquiring team will not be lottery bound. The other two players would certainly net more than your estimate. Varly easily gets a 2nd round pick + and Parise a second or third round pick.
Fleury netted a first (weaker draft), Manson got a 2nd, prospect (former 2nd), and salary retention.
Typically, teams trade around 6 1st rounders during the TDL - this year is a known premium for those picks and the lottery now allows for a team that finished 20th a legit shot at number 1.
So, maybe Parise nets a higher pick, but really who cares? If he doesn’t want to leave, then you get nothing. He obviously did not want to leave last year when it was clear the Isles were not making the playoffs.
If the Isles are 4 or 6 points behind in the WC, then Isles probably stay the course or trade to improve to make the playoffs vs dump for the draft.