My expectation all along has been that President Trump would wait until the conclusion of Paul Manafort’s second trial and then pardon him of all charges.
Today’s mistrial on 10 counts means that Trump can’t execute this strategy as quickly as he otherwise might have, because Manafort can (and probably will) be retried on at least some of the other counts.
I don’t know how long the government can delay retrying him, but I believe the mistrial complicates Trump’s ultimate plan and keeps Manafort in jail until this is all resolved.