I don't think Trump will be granted this special master to review the items taken from his home, but even if he was, he'd just attack the special master if things don't turn out his way.
"A VERY PARTISAN hack was appointed as "special master" to review the items taken from my beautiful home. This very unqualified and partisan attorney - who was a big fan of Obama and Crooked Hillary - also worked for the FBI under slipper James Comey. Just another chapter in the biggest witch hunt our country has ever seen!"
Delay, attack, project. Wash, rinse, repeat. Luckily, I don't see this working out for Trump the way he thinks it will.