Texas quarterback Arch Manning is set to make the first start of his career Saturday night when the Longhorns host Louisiana Monroe. Manning is filling in for Quinn Ewers, who is out this week with an oblique strain. Kirk Herbstreit was asked on SportsCenter Saturday morning what Texas should do at quarterback moving forward if Manning lights up the scoreboard against ULM. CLICK HERE to go to PrizePicks and use code ON3 to receive a guaranteed $50 once you play $5 in lineups! Herbstreit fully expects Manning to put up impressive stats, but no matter what happens, he feels strongly that this is…