Kankles is the equivalent of Teflon Don John Gotti. Unless someone equivalent to Sammy the Bull Gravano is turned and becomes a protected witness against Kankles, nothing is going to happen to her.
The good news is, Sammy the Bull ‘s testimony eventually took down John Gotti.
And notice it says “Arrests” meaning more than one person..my guess..Manafort and Podesta brothers..that way Mueller can come out and say “Hey I was fair on BOTH SIDES, Manafort is associated with Trump and the Podestas are associated with the Clintons and the DNC” so both end up looking bad and Mueller looks like a straight shooter even though he’s a straight up a-hole