Rules Analysis
If the disc is out-of-bounds (10.E) or comes to rest in the end zone, a member of the team becoming offense must put the disc into play within twenty seconds after it comes to rest.
For an out-of bounds disc that has come to rest on the central zone, the team becoming offense will have twenty seconds to put it into play.
If the disc is not reasonably retrievable within twenty seconds (e.g., far out-of-bounds or through a crowd), the player retrieving it may request another disc and any delay or pre-stall count is suspended until the offensive player receives the new disc.
If the disc is out of bounds and not reasonably retrievable quickly, a replacement disc may be introduced without a stoppage of play. The player retrieving the disc must first confirm with a player on the opposing team that the new disc is acceptable. The player putting the new disc into play must then raise the replacement disc above their head and announce “new disc” before putting the disc into play according to 10.H.