unfortunately the 40 man roster is full right now & MN has never been very big @ releasing players to get a look at others in Sept.
Aaron Hicks, Chris Herrmann, Kyle Gibson, Bruce Pugh & Dakota Watts whould be the 5 added to the 40 man this winter on their first shots.
Pedro Florimon & David Bromberg I expect to get added also as they are 6 hr FAs.
At this point, we may not see any of em if spots on the 40 man dont open. I would say Florimon, Hicks, Herrmann & Pugh are the frontrunners.
I expect Tosoni, Nishi, Manship, Gray (PLEASE), Capps & Pavano to be 6 to be taken off.
With the roster full, I would guess Arcia, Benson, possibly but not guarranteed Nishi/Valencia, Oliveros & Hendriks
Additions to 40-man: Gibson, Hicks, Herrmann (for sure), probably Salcedo and possibly Danny Santana and BJ Hermsen. I kinda doubt that Pugh or Watts will be added. (Pugh was Rule V eligible last year).
I think you're probably right on Florimon, but the Twins could probably bring Bromberg back without adding him to the roster.
In regards to September my guess would be: Benson, Tosoni and, depending on how depleted the OF is, possibly Arcia. Hicks would probably be better suited going back to the AFL (if that's allowed...?). It would make sense to get both Valencia and Nishi back up as well. (Though if Plouffe's thumb keeps him out, we'll see Valencia sooner than that...)
Hendriks, Oliveros and Waldrop will all come up. If Manship doesn't (and possibly even if he does), his Twins career is over. The Twins would also benefit from getting a look at Deolis Guerra, as he's out of options.
So, I guess... there's a chance that the full 40 is up minus the injuries... Of course, it's hard to speculate on any of this when the 25- and 40-man may look significantly different come August 1st.