This type of deal differs from third-party ownership, in that in the latter, the player's contract is owned by a non-footballing entity, such as a management company.
[3] For a co-ownership to be set, a player needed to be signed to a team and have at least two years left in their contract.
In case they failed to reach an agreement by the league-wide deadline, the issue would be resolved via a blind auction.
When a player was under the co-ownership of two teams, he could still be sent on loan to a third side, provided that all the parties involved agreed on the move.
[3] A practical example of this type of deal was when Brazilian striker Adriano was co-owned by Internazionale and Parma.