No official word from Houston yet, but the 49ers let the cat out of the bag today.
Over his first two years in charge in Houston, Bill O'Brien has shown an affinity for joint practices during training camp. In 2014, your Houston Texans had a few joint practice sessions with the the Denver Broncos. Last year, the Washington Redskins were the Texans' sparring partner (quite literally). This year, it looks like the Texans will be heading to the west coast for a few shared practices, presumably before the preseason opener against the 49ers.