By Harry Davies Francis Ngannou will make his MMA return in September or October after his brutal KO defeat to Anthony Joshua. Ex-UFC heavyweight champion Ngannou was dropped twice by Joshua in their heavyweight showdown last month before being stopped for good in the second round. Ngannou has since produced a lengthy list of excuses for his loss, even blaming his arrival time to the arena as one of the reasons he didn’t feel right on the night. Ngannou vacated his UFC heavyweight title last year and signed with rival MMA promotion PFL to pursue a boxing career. The 37-year-old is now 0-2 in t…