Nana Asiedu was expected to do great things on the gridiron for Penn State, but the offensive lineman’s once promising career is over after he was diagnosed with a genetic heart condition that will prevent him from ever taking the field again.

The Class of 2018 prospect, who would have been a true freshman for the Nittany Lions this fall, announced Wednesday that he’s been diagnosed with hypertrophic cardiomyopathy and will no longer be allowed to play football, ESPN reported.

“These past couple of weeks have been the toughest time in my life,” Asiedu wrote on Twitter. “This hurts because football was my everything.”

Although rare, his heart condition could lead to sudden cardiac arrest during vigorous physical activity, according to the American Heart Association. Asiedu says he will still be on scholarship and remain on the team in spirit.

“With love and support from Coach Franklin and the Penn State staff, I’ll still be on full football scholarship and still be a part of the team in every aspect,” Asiedu said. “This is one reason why I chose Penn State because of the security, and they’ll never go back on their word.”

A four-star prospect out of Virginia, Asiedu was the No. 8 offensive tackle in his class and earned a spot on the 2018 U.S. Army All-American Bowl roster.