Why?
A week means nothing.
All it does is make his life less comfortable as he deals with the hassle of moving and different team mates and coaches.
He has three years of college ball and a half a season of instructional camp that they can base things off of.
I honestly can't wrap my head around why you think he should go play in A ball.
He wasn't some toolsy but unrefined project they picked.
What could possibly happen in a week or two at A ball that would mean anything?]
If he goes 0-for, it means nothing.
If he hits .500, it means nothing.
When he inevitability does something between those two poles, it means nothing.