Lee still has three years and $44 million left on his contract, and while he was productive last year, the Warriors did have quite a bit of success in the postseason without him playing a major role due to a torn hip flexor. Lee averaged 18.5 points and 11.2 rebounds last season, but his defense is a concern and Golden State may be able to get some cap relief or another solid player in a deal.
The other was a bigger deal with the Portland Trail Blazers in an attempt to nab LaMarcus Aldridge. The Warriors also included Brandon Rush in that trade package, but the Blazers turned down the offer and have reportedly been pursuing more "robust" proposals for Aldridge.
Wojnarowski does say that the Warriors are in no hurry to trade Lee, but that they're simply gauging his worth on the market and are willing to make a deal if they feel it's a good one.