Brock Lesnar in SummerSlam main event? Update on Sami Zayn

Will Brock Lesnar compete in SummerSlam main event?

Source: Wrestling Observer Newsletter

As noted, Brock Lesnar and Paul Heyman are being brought back to WWE TV after Money In the Bank to build to a match at the July 19th Battleground pay-per-view. The original plan was to do Lesnar vs. WWE World Heavyweight Champion Seth Rollins at SummerSlam and that could still happen but so many creative changes have been made since that idea was first brought up.

After recently having shoulder surgery, Sami Zayn is expected out of action until October. WWE has another NXT Takeover special tentatively scheduled for October 7th and more TV tapings on October 8th so Zayn could possibly return then.