First, I would love to know how you have personal knowledge of Putin's intent.
Second, why would Putin not want a Russia collusion investigation for every president, regardless of who they are? Such hoax investigations weaken the POTUS, and makes him less effective, which is clearly in the interest of Russia. Surely even you can see that objectively obvious point. (I know Jim can't.)
Russia benefits from weak presidents. It so happens that Obama was already weak (promising flexibility, HRC's reset button, etc.) But Republicans don't usually nominate Russia patsies like the Dems do (here comes Sanders!), so I can see why it might be more important to undermine a GOP candidate than a Dem one, but this Russia collusion hoax has worked out so well (with people like you hoping to weaken the POTUS to Russia's benefit), why would he not do it with all candidate's?