Isn't there also a window, where after a player or agent declare that they want to come up to the CFL, if the team who has their neg rights can't sign them, they can go elsewhere?

Found it.  It sounds like they can sit and wait a year if they don't want to sign with the team.

 

http://cfldb.ca/faq/rosters/

 

 

 

1. What is a CFL team's neg list or negotiation list? How does the neg list work in the CFL? Where can I get aCFL team's negotiation list?

   In the CFL each team has a negotiation list, or neg list, consisting of 35 players they have exclusive rights to negotiate a contract within the league (being placed on a neg list does not prevent a player from signing with a team in another league, only a signed contract does that). The regulations surrounding negotiation lists are defined in Section 3 of the CFL By-laws. As the CFL conducts its College Draft for non-import (primarily Canadians) players only, the negotiation lists serve as a way of acquiring player rights for import players (though non-drafted non-imports can be placed on neg lists as well). Players who qualify as CFL veterans (have appeared on a game roster, reserve list or injury list for seven games) are not allowed to be placed on a neg list. Veteran players are free agents and able to negotiate with any team when their contract has expired or they have been released and cleared waivers.

   Being on a CFL negotiation list does not limit or restrict a player in any way outside of the CFL, it is a method of managing the negotiation rights to players just as a draft does. Players may negotiate with teams in other leagues as provided by that league's rules. If a player has no interest in playing in the CFL, they may never know they are on a CFL negotiation list.

   Teams place players on their neg lists on a first come, first serve basis. It is estimated 75% of players do not know they are on a CFL team's neg list. The lists change frequently and additions/deletions are published by the league to the teams daily. Teams must follow rules to negotiate in good faith. Players can notify the league of the negotiation window and if a contract offer is not received within 10 days, the player is removed from the team's neg list. If a fair contract offer is received, but rejected, the player is removed from the list one year from the offer date.

   Just like a draft limits competition for new players, the neg list does the same. However, rather than hold an import draft annually the negotiation list system provides much greater flexibility in adding and removing players as information changes through the year. The system seems to be well liked by CFL general managers and there does not seem to be any desire to change it or make it more open. The sheer number of players in the US along with determining their suitability and intentions makes the negotiation list system more appropriate than an annual draft.

   The CFL's negotiation lists are secret, shared amongst teams and the league office only and are not public. From time to time media reports will name additions and deletions to negotiations lists, but complete lists are held private among the CFL head office and member clubs

Wonder what the optics were on fuller not being a bomber... He sure woulda looked good in blue and good..