Jimmy Sinatro, a 5-foot-10, 185-pound catcher out of Skyline High School in Sammamish, Wash., has a full-ride scholarship to Gonzaga University. His father said he thinks his son still needs to develop.
"He's been around baseball his whole life," Sinatro said. "He wants to be a professional player, but is this the right time? We'll see."
Mills said he knows that Jimmy is a good player.
"He's got a full ride to Gonzaga, so he can play baseball," Mills said. "With that in mind, I think that's pretty classy of [general manager Jeff Luhnow] to do that."
Luhnow understands that it might be tough to pull Sinatro away from Gonzaga.
"We're certainly going to talk to him and see what can be done," Luhnow said. "He's a very good catcher as you can imagine."
Assistant general manager/scouting director Bobby Heck said he thought it was important to make sure the Astros could sign Sinatro if he changes his mind.
"Matt's kid is a prospect," Heck said. "We wanted to recognize that he was a talented player and at some point, his son may say, 'Hey, I want to be a professional player.'"
Sinatro has been a Major League coach for 16 years after a 14-year career as a catcher, which included 1,199 Minor League games. He played Major League games for the Braves, Athletics, Tigers and Mariners.
After his career ended in 1992, he became an advance scout for the Mariners. He's moved around Major League staffs since, serving as a bullpen coach and a first-base coach as well.
Sinatro hadn't talked to his son, but said he would help him weigh his options before July 13, the last day he could sign with the Astros.
"It's just an honor," Sinatro said. "I'm really happy for him."