Team should trade for Jack Trades are for demonstration not value value

Obvious reasons, he is from Boston and Bergevin will be 36 next year. The Window is closing.
Receiving Eichel, $1,000,000 retention

Imagine these top lines:
Marchand Bergevin Pasternak this line will produce as normal
Ritchie Eichel Smith Jack will bring out the best of his line.
Hall Coyle Foligno Hall will make Coyle and Foligno better.
Sending DeBrusk, Wagner, Moore (cap equalization), Lysell, Studnicka, Vaakanainen and 2022 first round pick.

Need to make a change to make the playoffs.
Receive Jack Eichel

Send Dube, Monahan (value and balance the cap), Zary and 2022 first.

Lost two centers.
I would imagine when Bergevin lost Danault he felt he had a fall back with Kotkaniemi. Now that he is down two centers he may feel a bit desperate.
Receive Jack Eichel

Sending Drouin (to balance the cap) Guhle, Primeau, Ikonen MTL 2022 first.
Buffalo flips Guhle for a young forward.

They trade for Jack because they fell they want to, not because it makes perfect sense as it does for Boston, Calgary and Montreal
Receiving Jack Eichel

Sending Blais, Georgiev, Kakka, Strome (Balance the cap and value) 2022 first round pick.