The war of words between West Ham and Sporting Lisbon has escalated following the breakdown of a transfer move for Portugal midfielder William Carvalho.
Sporting president Bruno de Carvalho on Wednesday referred to West Ham owners David Sullivan and David Gold as the 'dildo brothers' in an interview with Sporting TV, according to Portuguese newspaper Record.
The Hammers' proposed £23million deal for the Portugal midfielder broke down before the transfer window closed last week.
Sporting claimed West Ham had never submitted an official bid for Carvalho, leading the Hammers to vow to sue the Portuguese club.