Let's assume (1) both players want to test the FA market. (2) its probable both will be given silly money. You can tag only one player. Would you rather tag Mankins, let Light go and play Solder. Or would tag Light for only one year, work Solder in the lineup and let Light go next year. You would get a FA comp pick for Mankins. The FA comp pick probably will be higher for Mankins than for Light.