Brock Lesnar made himself pretty clear in his book about what he liked and disliked about working for WWE in the past. The Contracts that Brock Lesnar has signed since then have addressed many of Brock Lesnar's pet peeves.

Brock Lesnar left in an attempt to go for Professional Football, when that didn't pan out he went for Mixed Martial Arts in Ultimate Fighting Championship when he was done there he returned to World Wrestling Entertainment.

for a while he had bad blood with the WWE plus he wanted to other things ans chased a UFC career

Greed // Money

UFC.

Wwe

who is bruce?