12:04pm: About a half-dozen teams have inquired on Norris but Houston has yet to engage in serious talks, according to Nick Cafardo of the Boston Globe (on Twitter).
THURSDAY, 9:10am: Astros GM Jeff Luhnow suggested a trade involving Norris or Harrell doesn't seem likely, Brian McTaggart of MLB.com reports. "I've always maintained that there's no such thing as an untouchable, but at the same time, Harrell and Norris are such an important part of this club right now it would take a significant offer to even consider something," Luhnow said.
WEDNESDAY: The Astros are still telling teams that they'll listen on anyone if they get two or more players back in a deal, rival clubs tell Jayson Stark of ESPN.com (on Twitter). Lots of scouts are eyeing right-hander Lucas Harrell in particular.
Recently, we learned that the Cardinals have interest in Harrell and fellow hurler Bud Norris. Last season was Harrell's first full big league season and the 27-year-old looked strong as he posted a 3.76 ERA with 6.5 K/9 and 3.6 BB/9 in 32 starts.