Johnny Manziel may be experiencing the pressure that comes with being the first freshman in college football history to win the Heisman Trophy.

Shortly after turning 20, the Texas A&M quarterback won the prestigious award given to the best player in college football every year and immediately became a nationally recognized figure.

According to the Dallas Morning News, Manziel spouted off on Twitter about his desire to leave College Station.

"Bull---- like tonight is a reason why I can't wait to leave College Station ... whenever it may be," the tweet read.

He was unspecific about the incident that inspired the tweet, but it was deleted soon after being posted. He followed up Sunday morning with another tweet.

Texas A&M University (TAMU) said they do not expect a statement from Manziel regarding his tweets. The TAMU Aggies head football coach Kevin Sumlin spoke last week about the constant attention and scrutiny the young QB was receiving, ESPN reported.

"I've seen it, just like everybody else," Sumlin said Thursday. "I think being around other guys in the past has helped me, but there's never been anything like this before. Being around Adrian Peterson or Jason White or Sam Bradford or Case Keenum or Drew Brees, people like that, that's part of the deal. When you are a nationally recognized person, whether you're young or a freshman or an older guy, there are some things that come with that."

The Morning News reported Sunday that Sumlin had already gotten an undisclosed person to help counsel Manziel on the harsh public spotlight. Since winning the award, Manziel has led a very active social life and has documented most of it himself on social media sites like Twitter and Instagram.

"Like I said before, (Manziel) is still himself, and he has made some mistakes and he knows that. That's part of growing up," Sumlin said. "We've got a support process that's in place for him and his family and I know that ever since summer school started he has been back hard at work and he's happy to be back with his teammates."

Manziel led the Aggies to an 11-2 record and a no. 5 national ranking, their highest to end a season since 1956. He accumulated 5,116 total offensive yards (3,706 in the air and 1,410 on the ground), an SEC record previously held by Auburn's Cam Newton.

Newton also won the Heisman Trophy, as a junior, and went on be drafted first overall in the NFL Draft.