free agent; uncontracted player or person
Loanword from English. Most often used in sports for a player who is free to sign with another team, but it can also describe someone not bound to a particular organization or contract.
He will become a free agent after this season.
The team signed a strong free agent.
He will become a free agent at the end of this season.
He signed with a new team as a free agent.
The player declared free agency during the off-season.