Two Cuban players who defected should be free agents.
Rusney Castillo (
Top Cuban center fielder Rusney Castillo defects | HardballTalk) is still on the roster of Ciego de Avila. He hasn't signed with a MLB team because he is still establishing residency in the US, but is projected to join a team this year.
Odrisamer Despaigne is retired in the game, but is in a similar situation. He was reported to be close to signing with the Padres, but hasn't done so yet.
Padres nearing deal with pitcher Odrisamer Despaigne - MLB Daily Dish