That the Broncos have competition in the pursuit of San Francisco 49ers defensive coordinator DeMeco Ryans is no surprise. The 38-year-old is considered by sources to be at or very near the top of Denver’s candidate list for its open head coaching position. On Friday, the NFL Network reported Ryans is also a top choice for Houston and that he and the Texans are eyeing a potential second interview next week after the 49ers play in Sunday’s NFC Championship Game. The fact that Ryans is drawing interest from Houston doesn’t make him a less attractive option for Denver, but a source with knowledge of the Broncos’ process told The Post it’s unclear how long the Broncos’ search committee — headed by CEO Greg Penner and general manager George Paton, among others — is willing to wait on a decision.