Yeah, I never thought Manafort had good prospects, even had Mueller not roped his case into his purview. This is arguably good for him considering the feds will want to protect the case as the biggest fish.
What he's facing is nothing considering his history. This guy was working for Mobutu, Marcos, etc. his deals with Yanukovych were more like typical consultancy rip-offs. He has all kinds of bad loans that long predated the Ukraine stuff. He was already under FBI investigation for like two years before he joined the Trump campaign.
iirc, the feds are the one who by all accounts essentially told Trump to kick Manafort out of his campaign.