Backup Coupon Warning

[FIMAlumni]

So the real question is what is the definition of available in the manual?

In this situation, the ALLIANCE CAPTAIN has the option to invite the highest seeded eligible Team from
the pool of available Teams to join its ALLIANCE. The Team who’s ROBOT and DRIVE TEAM replaces
another ROBOT and DRIVE TEAM on an ALLIANCE during the Playoff MATCHES is called the BACKUP
TEAM.

Are all teams that are eligible also available, or only teams with working robots?
Defining eligible as any teams that are not ineligible from:

If a Team declines the ALLIANCE Lead position or doesn’t send a student representative for ALLIANCE
selection, they are ineligible to participate in the Playoff Tournament.

and

If the Team declines, that Team is not eligible to be picked again or to be a BACKUP TEAM

I can't find anything in the manual about a team being allowed to decline an invitation to be brought in as a backup.