Tiger King star Rick Kirkham has warned that Joe Exotic could be “out for revenge” if he is ever released from prison.Exotic, around whom the recent hit Netflix docuseries is based, is currently serving a 22-year sentence after organising a murder-for-hire conspiracy to kill his rival Carole Baskin.Discussing the possibility of Exotic ever being released from jail, Kirkham spoke to the Sun after Exotic hand-wrote a letter to Donald Trump asking to be pardoned for his crimes.“The very fact that