Cleveland Cavaliers
The Cavs don't have a great option at center. They have played with Sideshow Bob (Andersen Varejao) at center for years, but that doesn't add wins and they really want to win next season. Their best pure center is second-year player Tyler Zeller, who isn't ready to play big minutes on a playoff caliber team.
Assets: the Cavs have a lot of young assets - Tristan Thompson, Dion Waiters, Tyler Zeller. With the recent acquisitions of Anthony Bennett and Earl Clark, along with Sideshow Bob's best position being PF, it's quite possible they would consider parting with Tristan Thompson for Marcin Gortat.
Minnesota Timberwolves
If the Cavs or someone else decide to go with signing Nikola Pekovic to a big offer, then the Wolves need a center.
Assets: The sad thing about the Wolves is that their only real, young assets are guards and Derrick Williams. They just drafted Shabazz Muhammad to go along with Rubio and Shved, and just signed two veteran shooters (Chase Budinger, Kevin Martin). There's just nothing worth sending back to the Suns here.
New Orleans Pelicans
The Pelicans just traded their 2012-13 center for a bag of beans, and they weren't even magic beans. Pinto, I think. They definitely need a center.
Assets: the ever-available Eric Gordon is a luxury now in that expensive back court. Guard Austin Rivers is the only other kid with potential that NOLA would be looking to move. Their team is still very shallow, with no bench and no cap room to make one. NOLA could try to trade Gordon to the Suns in a many-to-one transaction to fill out their bench. Also, there are no first-round picks to trade until 2016 at earliest. The Pelicans just sent their 2014 pick to Philly.
Oklahoma City Thunder
Now here's an interesting option. The Thunder are stuck with Kendrick Perkins ($19 million over 2 years) and really need an upgrade to go all the way.
Assets: Serge Ibaka, Jeremy Lamb, Perry Jones and lots of first round picks. Yet, the Thunder suddenly really need Lamb to pan out for them, unless they sign one of the few remaining shooters on the market. The roster is totally top-heavy, but the Thunder will have to make a decision on how hard they want to go to the Finals. Adding the expiring Gortat while shedding Perkins' contract might just entice the Thunder to give up some future assets to get it done. The Thunder currently have their own 2014 first-round pick and the Mavericks' top-20 protected pick, plus their own 2015 and 2016 picks.