If the Bruins want Lindholm, likely [Jake] Debrusk. They don't want any picks and the Bruins have none. They want a scoring winger that can make up for Toffoli being traded. There's probably more that would be in the trade, but Debrusk would be the target, I think.
This price would be steep for Lindholm as Debrusk is a young scoring winger. However, championships are won through the middle of the ice often times and acquiring a center like Lindholm could be worth the ask.