I really think that they just want to let that core gel together for a while.  None are old for AA and could form the nucleus for the next several years.

There will be player movement in the minors the last two or three weeks of June. Polanco is a good candidate to move up.

It's not like it is illegal to call a guy up to the majors from double-A. Last year they did it with Vargas. Heck, didn't they call up Polanco from Ft. Meyers last year? I don't really care too much about AAA, unless it it is necessary. In his case it might not be and his development might be better served on Chattanooga's roster.

It will all work out... no need to fret.

I think Santana is more likely to be sent down to AAA than Polanco being promoted to AAA.  The Twins have to figure out who their SS of the future will be.