Two head coaches known for their high-powered offenses have emerged as potential candidates to replace Houston Nutt, who was criticized during his tenure at Arkansas for being too conservative with his playcalling. A source familiar with the situation said Tuesday that Oakland Raiders coach Lane Kiffin could be a good fit for the Razorbacks. The source, who spoke on condition of anonymity, said Kiffin has wanted to coach at the college level. Kiffin is in his first season with the Raiders, but there is talk that he might be unhappy with the situation. Oakland is 3-8 this season, and the team has had quarterback issues despite using its first overall pick last April to draft former LSU signal-caller JaMarcus Russell.