Houston Astros general manager Dana Brown is hoping to extend some of the club’s homegrown stars but admits he has some hesitation about long-term contracts.

“I just don’t like big deals,” Brown said Wednesday, according to the Houston Chronicle’s Chandler Rome. “If they’re open for something a little more than five (years), maybe I would be open to doing that.”

Brown said in February that he wanted to be aggressive in retaining some of the club’s core players. The Astros were able to sign right-hander Cristian Javier to a five-year extension but have yet to find common ground with left-hander Framber Valdez or outfielder Kyle Tucker.

Under owner Jim Crane, the Astros have yet to sign a player to a contract for longer than six years. Brown knows that may be a challenge to keeping Tucker in the fold.

“I think Jim is willing to (go) further. I just don’t know that I have the comfort of going as long as, say, maybe I’ll have to to get Tucker done,” Brown said.