Yeah, Breslow or any minor league signing is fine, in theory. It's pretty clear that Breslow never should have even made the roster, though (even when he got acceptable results the first couple months, the team never really wavered from keeping him in a low-leverage short reliever role, which rendered his rostering pointless). The Twins relief prospects had already proven themselves particularly fragile and volatile the past couple of years, though, so I do count that as a demerit against the new FO if they were counting on something else from that group.