Johnny Manziel's tenure at Texas A&M could last just two seasons, which makes the signings of Kenny Hill and Kohl Stewart vital for the school.

Manziel won the Heisman Trophy as a redshirt freshman and would be eligible to declare for the 2014 NFL Draft.

“With the uncertainty of Johnny's situation because of the way the NFL is going — his stock is rising,” offensive coordinator Clarence McKinney said this week.