‘In what could become an interesting game of tit-for-tat, free-agent linebacker Keith Newman will visit the Texans on Monday. Newman has spent his four-year career withBuffalo, enjoying his best season in 2000 when he had eight sacks for former coach Wade Phillips, who used the 3-4 defense. Playing in the 4-3 defense for new coach Gregg Williams, Newman had only 6 1/2 sacks over the past two seasons.’