Member-owned Catalan giants Barcelona have been wearing the Unicef logo since 2006 and offer the charity free advertising space on their shirts.
"We'd love a proper sponsor," Laporta lamented. "I just can't understand why we can't seem to get one, it's embarrassing.
"We thought we had a deal with Staybrite Windows but that fell through and then we were sat by the phone all summer - nothing else came up, so it's bloody Unicef again. "
Barcelona aren't the only giants of the football world without a sponsorship deal, even West Brom are currently without a deal.