NFL Commissioner Roger Goodell said on Monday the league’s top priority was for the safety of its players, adding that most of the money from a new fund would go toward researching brain injuries linked to the sport.

He told the Congress of Neurosurgeons meeting in Washington D.C. on Monday that

“[T]here is no issue of greater importance when it comes to player safety than the effective prevention, diagnosis and treatment of concussions,” Goodell told the Congress of Neurosurgeons meeting in Washington D.C. on Monday, according to NFL.com.

Goodell said that the league is pushing for all 50 U.S. states to adopt concussion guidelines for all youth sports. Thirty states currently have measures in place now.

He also noted the league and player’s union will contribute $100 million for medical research in the next 10 years.

The “vast majority” of the funds would go for research on brain injury, he said.

The league has discussed and the possibility of limiting or curtailing players in a “three-point stance” although no changes are foreseen. He said the matter “would continue to be discussed.”