Portugal goalkeeper Diogo Costa said he 'hopes to continue' at Porto amid links with Manchester United. Costa has been widely backed to leave Portugal ahead of next season amid links with an Old Trafford switch. The future role of David de Gea at United is not certain after several blunders this season. The Spaniard is out of contract this month, although is thought to be nearing a renewal with reduced terms. However, Erik ten Hag refused to declare him as his No.1 next