Per Minneapolis ESPN1500's Darren Wolfson, the Rockets have been one of the most aggressive teams in trying to trade up to the No. 2 overall pick. Wolfson doesn't see an obvious fit with the Rockets, and I don't really either unless both sides think Kevin Martin is the linchpin of a deal. It would be hard to see Houston GM Daryl Morey making that trade unless he were getting more back. The Timberwolves two biggest assets, Ricky Rubio and Kevin Love, have long been trade targets of the Rockets.
They also could be trying to consummate a three-team deal for the No. 2 overall pick. It's unknown whether Houston would be targeting Arizona forward Derrick Williams or Turkish center Enes Kanter with the pick, but it would likely be one of them considering their team needs and the respective talent that is available in the draft. Houston has six first round picks over the next three years to barter with, and seem to be set up to finally take advantage of their asset accumulation strategy over the past two years.