The 185-pound matchup, which both fighters have verbally agreed to, is expected to headline UFC Fight Night inside Shanghai’s Mercedes-Benz Arena.
FloCombat.com first reported the bout.
This will mark the second time the UFC has booked this matchup. The two were supposed to fight earlier this summer in Rio de Janeiro, but Gastelum (13-3) was removed from the event after testing positive for traces of marijuana in March.
Silva (34-8) campaigned to stay on the card, but could not come to terms with the UFC on a replacement opponent. The 42-year-old hasn’t fought since he won a close decision over Derek Brunson at UFC 208 in February.
Both fighters train out of Southern California.