Scott Quigg will defend his WBA super-bantamweight title against former world champion Kiko Martinez this summer after talks aimed at organising a showdown with Carl Frampton ended in failure.

Frampton, who took his IBF title from Martinez last September, had been tipped to fight Quigg in a unification bout this summer but despite promoter Eddie Hearn publicly offering £1.5m for the fight, no deal could be done.

Quigg has predicted the toughest fight of his career against Martinez when he faces the experienced Spaniard at the Manchester Arena on 18 July.

"This is the toughest fight of my career so far," Quigg told the press.

"Everyone knows about Kiko Martinez. He's been to everyone's backyard and fought them, including beating Jhonatan Romero for the IBF title on away turf in Atlantic City.

"He punches hard, he's aggressive and he's strong and it's a chance for me to look great against a well-known opponent.

"He's been to Ireland to fight Carl Frampton twice (and lost) and it's a chance for me to go one better.

"I'm going to put on the best performance of my career."

Martinez famously beat Bernard Dunne in Dublin back in 2007, but has twice been beaten by Frampton who is still expected to defend his IBF title in the summer.