Trump can take this to the Supremes. If the Deep State still has Roberts' ovaries in a vise, and they rule against the President, guess what?
You have a VERY pissed-off the Donald, as Commander in Chief, with all of his Deplorables too, and he now has the ability to violate ANY attorney-client privilege to go after the Deep State: literally to the point of extinction. :-)
And who is going to do PDJT's bidding? He has no Justice Department or FBI to investigate anybody!