Kevin Towers says it's "unlikely" that the Diamondbacks will trade Justin Upton this offseason, but they are still listening to offers.

"I'm open-minded and will hear what people have to say," Towers said. "If a deal presents itself that makes the Diamondbacks better by trading Justin Upton, I think I need to be open-minded to that. The last two years there has not been a deal that we felt makes us better. That's why we've retained him and we've kept him.

"We want to win in 2013. He will not be an easy guy for us to move. I think we've said that. It's probably unlikely we end up doing something with him, but if somebody is willing to step up and we think it's a deal that's going to make the Diamondbacks better going forward, we'll talk about trading him."