Manageri au in partea de jos a cardului un procent x% (intre 0 si 3). Se aduna procentele managerilor din club si cand aplici un card de contract se primeste bonus X%(X fiind suma procentelor managerilor din club, dar maxim 50).
Cei care au boost peste 0(aia te intereseaza) sunt cei shiny (1 la bronz; 2 la argint si 3 la gold)

http://www.fifauteam.com/fifa-14-ult...uide-managers/
First of all, every team should have, at least, one manager. He contributes to the individual chemistry by his nationality and his league. A manager can give one extra chemistry point to a player if he has the same nationality or league. He cannot give more than one point to each player even if he has the same nationality AND league. Each manager comes with one league but you can change it whenever you want by applying a league card.
Your clubs managers affect the players’ contracts in a positive manner. Each manager’s card shows the percentage bonus in contracts that the manager provides.
By applying a contract card, its effect is multiplied by the sum of the managers’ coefficients that the club has. For more managers that you have, the sum of these coefficients can never be higher than 50%.
The only manager that needs contracts in order to help his team, is the one that sits on the bench.