The agent for Jose Valverde says there's mutual interest between the Astros and their free agent closer, according to MLB.com.
The Astros have communicated to Jose their desire to bring him back," Gene Mato explained. "He really enjoyed his time there and is open to the idea of returning."
Valverde wants to explore free agency, so the Astros are just one of his options. As a Type A free agent, he'll cost a top draft pick if the Astros offer arbitration. That's not a sure thing, since the reliever could cost about $10MM next year, but rival GMs tell ESPN.com's Buster Olney that the Astros should offer arbitration.
Astros GM Ed Wade said in September that he'd "love" to bring Valverde back. The righty saved 25 games and allowed just 40 hits in 54.0 innings this season, striking out 56.