This situation has occurred due to Falvey's lack of smart roster management. At the time signing Bell to play 1B was a bad decision, he was going to be the DH, there was no way he was playing 1B. Everybody else in baseball knew this but not the Twins. If Bell is not here ERod probably opens the season as our LF and Larnach is the DH and you would have had coverage for Buxton in CF as well. Now would ERod have matched Bell's production, maybe not completely but I bet he would have had 10-15 HR's and around 50 RBI's. Bell has a WAR of .8 that is replaceable. And those dollars could've been used for a position of need, the bullpen.
This team has always valued the fringe veterans over the younger players. And Zoll is just Falvey 2.0, there is no difference. They have rarely been aggressive in calling up younger players until they were forced to, even Keaschall who was probably rushed because they needed to. Sometimes you have to find a spot for a player like Jenkins.
And sometimes you have to remember you have a minor league system to develop and backfill the major league roster. They have primarily used St. Paul to churn thru the 8th pitching spot and to demote underperforming players. Sometimes when there is a need you have to reach down and bring somebody up whether they are "completely ready" or not. Maybe they fail, maybe the learn for future call ups or they just might be productive. But they will try to fill the opening with fringe veterans and it has put this team in a pattern of mediocrity. A perfect example was when Buxton was first hurt and sat for 4 games. Fedko was on the roster, but he didn't play one game in CF, instead they forced Gray a fringe veteran into the lineup over Fedko. And this is not about Fedko it is about the process they follow and I see Zoll doing the same.
So now they don't know what they have in ERod and will have to probably put him on the roster next year and hope he has figured it out. And I would guess that he will be the 14th player in September.