Alberto Del Rio is reportedly unhappy with his character and is leaning toward using the out in his clause in September, per Wrestling Observer.
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WWE just launched a full brand split, with half of its stars heading to Monday Night Raw, and the other group bouncing to Smackdown Live.
Related: Former champion to return to WWE for the first time in six years
While keeping all of its talent, and bringing back some familiar friends is a necessary move for WWE with now two full rosters to fill, Del Rio's exit would open a gap in the mid-card/main event spot on Smackdown. WWE has plenty of time to fix this issue, but keeping all its stars happy is somewhat of a balancing act that simply can't be done at all times.
Del Rio returned to WWE in October to beat John Cena for the United States championship. If he does leave, a return to AAA and/or Lucha Underground wouldn't be much a surprise.
He is a former two-time WWE champion and former two-time World Heavyweight champion.