Well Adam Booth and George Groves both have massive egos so it's not a shock they ended up falling out.
This is why I don't understand why people just scream for Groves to go back to Booth. A boxer doesn't change trainer 10 weeks before the biggest fight of his career unless something drastic happens. Both sides will plead innocence but it's quite clear Groves couldn't go back to booth.
So, Groves has joined Shane McGuigan? Surprised he didn't remain with Abel Sanchez, with whom George had been working. With regard to trainers: George sorely needs some long-term stability at rhis point in his career.
Trainers are overrated, in the conditions of a professional boxing license, the onus is on the boxer to maintain his physical condition. Better a boxer learn about is own body and condition himself, tnat way he will become a more complete fighter.