Trent Alexander-Arnold picks new name and shirt number as No. 66 banned at Real MadridTrent Alexander-Arnold will wear No. 12 for Real Madrid, switching from his customary No. 66 due to La Liga rules. The £10 million signing will also have “Trent” on his shirt back. The No. 12 was previously worn by Marcelo and briefly by Camavinga. Alexander-Arnold’s Instagram handle is now @trent after signing a six-year deal.