Sealey is the No. 1 recruit in the Class of 2024, according to FloWrestling.
Originally scheduled for December 12, the UFC is reportedly aiming for a March 4 postponement date.
The Nittany Lions will have two duals in the Bryce Jordan Center this season.
Nickal will reportedly take on Jamie Pickett at UFC 282 in Las Vegas.
Following his 52-second submission win, Nickal was offered a UFC contract by Dana White.
Ryder, who has two state titles under his belt, projects to wrestle at 184 pounds at Penn State, per InterMat.