European super-bantamweight champion Carl Frampton will fight Fabian Oscar Orozco at Wembley on 20 July.
The Belfast man, who confirmed the Argentinian as his opponent on Thursday, will be making his first appearance with promoter Frank Warren.
Orozco, 27, has won 20 of his 24 fights but has not fought outside Argentina since he turned pro in 2008.
He was scheduled to defend his IBF Latino super-bantamweight title against Julian Evaristo Aristule on 28 June.
Frampton parted company with promoter Eddie Hearn's Matchroom firm last month to join Warren.
He has signed a four-fight deal on the Box Nation channel, starting with the London contest next month.
Frampton hopes to contest a world title as early as the third fight.