*NOTE -- A player with a slide contract can be "signed" and added to your active roster at any point this season but your team can't be at 50 contracts and the player will remain on your contract list for the remainder of the season.
Here is the announcement of the rule implementation 2 seasons ago (nothing has changed):
http://bbkl.ca/viewtopic.php?f=5&t=1206 ... 60#p190055
PLAYERS ELIGIBLE FOR SLIDE:
- 18 and 19 years old players (i.e. not turned 20 yet) as of October 1st who have not played 10 NHL games in their career yet.
- players with 0 NHL games that get signed during the season
HOW IT WORKS
GMs can leave those players without a contract on googledoc so that their contracts do not count towards the limit (50).
Whenever a GM decides to put one of those players in the active roster (lineup or bench) he needs to add his contract on googledoc and as a result from that moment onward that player will automatically add to the total number of contracts.
Once a player is given a contract on googledoc he loses his sliding eligibility for the rest of the season.