I guarantee Holl returns a 3rd+ or value that equates to that.
There was lots of talk that he was higher regarded than Dermott league-wide.
Leafs fans like to pull micro-events out of their ass to slander the guy, but the reality is that he's has strong 2nd pair usage results to his name, can play heavy PK minutes, is tall, right-handed, average to good analytically, and makes just $2M. Even on the most basic counting stat level, he's good for 20+ PTS.
The only reason the Leafs are even moving him is to make more permanent roles for the young Swedes and because he has real value to make it worth their while.