The sophomore signal-caller will start against the Aggies' first game against 15th-ranked Arizona State, according to the team.
Allen was also named the MVP of the Liberty Bowl, tossing 294 yards and four touchdowns in a 45-37 win over West Virginia.
During this off-season, Texas A&M signed Kyler Murray, the fifth-best quarterback in this year's recruiting class, according to Rivals. Texas A&M's roster also features quarterbacks Jake Hubenak and Conner McQueen.
Kenny Hill will sit out this season after transferring to TCU. He has two years of eligibility remaining.