While Romeo Crennel's Wikipedia page has already been changed to call him the Texans' defensive coordinator, that's a bit premature.
Crennel is in Houston interviewing to become the Texans' defensive coordinator, according to Mark Berman of Fox 26 and John McClain of the Houston Chronicle. That's been expected since we learned last week that new head coach Bill O'Brien was targeting Crennel for the job.
O'Brien and Crennel have a common tie in that they were both coordinators for the New England Patriots. By the time O'Brien started working for the Patriots, Crennel had already left to be the head coach of the Cleveland Browns.
After being fired by the Browns, Crennel initially went to Kansas City as the defensive coordinator but finished the 2011 season as interim head coach. The Chiefs then hired him to be their head coach in 2012. That season ended with the Chiefs earning the top pick in the draft and Crennel being fired once again.
The Chiefs are still paying Crennel, who didn't coach anywhere last year, and will be doing so for one more season. Crennel will earn $3.5 million next year. That means he can be patient with his next opportunity, but that doesn't necessarily mean he wouldn't have a reason to get back into coaching.