Manziel reportedly will announce future plans before Aggies' bowl game
Manziel, the defending Heisman Trophy winner, has yet to discuss his future with Sumlin.
"We haven't had that conversation," Sumlin told ESPN Radio. "My job is to get him all the facts that we can get him. We'll have that discussion after the Missouri game, certainly during the bowl preparation. I'm sure the announcement will be made at that time."
That game against Missouri is the Aggies’ regular-season finale Nov. 30.
Manziel again is among the Heisman front-runners, having thrown for 3,313 yards and 31 touchdowns this season. He also leads the Aggies with 611 rushing yards and has scored eight times on the ground.
Texas A&M (8-2) is ranked No. 12 in the BCS.