This is precisely what I think has happened. They signed Kindl to a relatively lucrative contract at the time, and last season got burned with what is possibly an immoveable contract, or at least one that will not be easy to ship out.
The last thing KH wants is to really strap the teams finances down by signing DK to a $4m deal for 3-4 years only for him to flop next year and become the next Maxim Kuznetsov.
I highly doubt DD becomes the next Max Kuznetsov (did he even have a cup of coffee in Detroit - all joking aside - he was nothing when compared to DD).
If Holland is so concerned with cap space - maybe - just maybe - he shouldn't have given Quincey a raise, and not re-sign Cleary?