From wikipedia:
Gucci Mane recently put out a diss track insulting multi-platinum rapper T.I. titled "What Kinda King (I Smell Pussy)". Due to the fact that they're both on the same label and with T.I. being Atlantic Records' main artist, T.I. has the power to have Gucci Mane dropped or have his album unreleased. Gucci Mane apologized over the phone through an interview about the diss song towards T.I., consulting that he thought that "Tell 'Em I Said That" song by T.I. in the cd T.I. Vs T.I.P. was about him.