Haskins had previously said he intended to participate in all drills at the combine, which starts next week in Indianapolis.
Mel Kiper has Haskins at No. 5 on his Big Board and sees Haskins as the first quarterback off the board, going at No. 6 by the Giants in Kiper's Mock Draft 2.0.
Haskins finished third in Heisman voting this season. He set Big Ten records for single-season total yards and single-season passing touchdowns in 2018, Haskins' only season as the Buckeyes' starting quarterback.