NORMAN — Former Oklahoma offensive lineman Brandon Walker was arrested early Sunday morning on a complaint of driving under the influence. Walker was detained about 2 a.m. Sunday at 211 W Boyd St., Norman police spokeswoman Jennifer Newell said. Walker was later transferred to the Cleveland County Detention Center, Newell said. It is the second time in a week Walker has been arrested by Norman police. On May 10, Walker was served with a municipal warrant after failing to pay a ticket for driving without proper registration or proof of insurance. Walker didn’t pay the ticket or appear in court, prompting police to issue the warrant April 25. Walker started at guard for the Sooners the last two seasons. He wasn’t selected in the NFL Draft, but signed a rookie free-agent contract with the Houston Texans last month.