Natal (17-6-1) looks to get back on track following losses to Tim Kennedy and Ed Heman, while Camozzi (19-8) enters the bout on a three-fight losing streak after losses to "Jacare", Lorenz Larkin and Bruno Santos.
The winner of the second season of The Ultimate Fighter: Brazil will return to the Octagon in September. Leonardo Santos, who won the reality show in 2013, is set to meet UFC newcomer Lukasz Sajewski in a lightweight bout at UFC Fight Night 51 in Brasilia, Brazil, on Sept. 13.
Santos (12-3-1) returns to action following a majority draw against fellow TUF winner in March. Prior to that bout, the Nova Uniao talent made his Octagon debut with a second-round submission over William Macario to win the TUF: Brazil 2 season.
Sajewski makes his promotional debut after racking up a perfect 13-0 record in Europe. The Polish fighter, a former Gladiator Arena lightweight champion, won the majority of his fights via submission.
Arreola (22-7-1) makes his Octagon debut after three submission victories, while "Trator" (18-4-1, 1 no-contest), a former Jungle Fight lightweight champion, enters the UFC in a nine-fight win streak.