bargaining chip 
(British also bargaining counter)
noun
A potential concession or other factor which can be used to advantage in negotiations.The territory could be used as bargaining chips in any negotiations....
- However, rather than engage in hasty strike action SIPTU is expected to use the threat of disruption as a bargaining chip in forthcoming restructuring negotiations.
- But a decision to sell off its shopping centre interest would be a major surprise as it gives the council a huge bargaining chip in negotiations over town-centre regeneration.
- audience-friendly
- audience involvement
- audience participation
- audiencer
- audience rating
- audience research
- audience researcher
- audiencier
- audient
- audiently
- audile
- auding
- audio
- audio-
- audio-active
- audio amplifier
- audio-animatron
- Audio-Animatronic
- Audio-Animatronics
- audiobook
- audio cassette
- audio CD
- audio conference
- audio conferencing
- audio disc