Central Notes: Tigers, Castellanos, Beltran, Konerko, Twins

As we work on catching up on things after a busy few days, here's the latest from the AL Central, which has been among the game's busiest divisions of late:

• Tigers GM Dave Dombrowski made clear today that the trades of Prince Fielder and Doug Fister were connected both to the signing of closer Joe Nathan and the need to lock up major players like Max Scherzer, reports MLB.com's Jason Beck. "A very big part of what we were trying to accomplish [was] to get a closer," said Dombrowski. "And when I say that, sometimes you need some flexibility to make some other things happen, too. We do have some players that are on the verge of being free agents that are pretty big players for us, that you want to create some flexibility there to be in the right spot at various times."
• Dombrowski did, however, downplay the likelihood of a major new signing. "I would think that we would not be involved in the big [names]," said the GM.
• In the wake of the Fielder-for-Ian Kinsler trade, Dombrowski says Nick Castellanos will start at third base with Miguel Cabrera moving back to first, writes Chris Iott of MLive.com. The news confirms what had been suspected at the time, and jives with rumors linking Detroit to Shin-Soo Choo. It also confirms the broader market effects of the Fielder-Kinsler swap: that deal increased the amount of cash pegged for corner outfielders.
• Indeed, one such player, Carlos Beltran, is fielding interest from several clubs. He is very unlikely to get more than two years from the Yankees or Red Sox, however, Jon Heyman of CBSSports.com reports. It also appears that, if he wants to build up bidding for his services, Beltran may need to wait until Shin-Soo Choo leaves the market. Heyman reports that the Tigers, Reds, and Rangers are all very interested in Choo but also see Beltran as an option. While the Mariners are also involved and could be willing to spend big to lure the 36-year-old to the Pacific Northwest, Heyman indicates that the Royals are still perhaps the odds-on favorite to land Beltran out of the crowded field of suitors.
• After signing on for one more go-round with the White Sox, Paul Konerko plans to hang up his spikes afte 2014, tweets Jim Bowden of ESPN.com. 
• The Twins' off-season trade talks may have been gummed up by the recent suspension of well-regarded prospect Eddie Rosario, reports Mike Berardino of the St. Paul Pioneer Press. The 22-year-old Rosario cracks the top ten of the Minnesota prospect list, per Baseball America (subscription required, and recommended), which is particularly impressive given the top-end talent ahead of him. With Brian Dozier emerging as an option at second, Rosario had been the most likely prospect to be dangled as trade bait. 
• Twins GM Terry Ryan told Berardino that he sees free agency as the more likely route to add MLB players at this point, even after picking up Ricky Nolasco and Phil Hughes on the open market. "I don't want to give up any of our players," Ryan said. "I'm not saying we won't make a trade. We might. But if you're going to get a quality starter, it's going to be difficult."

Zach Links contributed to this post.