15.4 (c) of the NHL-NHLPA Collective Bargaining Agreement
A Club shall be permitted to dress a minimum of eight (8) veterans for any Exhibition Game. For purposes of this Section 15.4(c), a veteran shall constitute either: (1) a forward or defenseman who played in thirty (30) NHL Games during the previous season, (2) a goaltender who either dressed in fifty (50) or more NHL Games or played in thirty (30) or more NHL Games in the previous season, (3) a first round draft choice from the most recent year's Entry Draft, or (4) any Player who has played one-hundred (100) or more career NHL Games. The matter of Player participation in Exhibition Games shall be referred to the NHL/NHLPA Competition Committee for its consideration and recommendations, if any, in accordance with Article 22.