Real Sociedad defender Inigo Martinez is interesting Barcelona.

Sport says Barca are chasing the 22 year-old this summer as they seek to bolster coach Tito Vilanova's defensive options.

Real have referred Barca to Martinez's €30 million buyout clause.

But Barca hope the trump card of including Gerard Deulofeu in their offer will convince Real to return to the negotiating table with more reasonable demands.