Allen signed for Arsenal in the summer of 1980 for a fee of £1.25m, but he did not play a single competitive match (although he did play three matches in Arsenal's 1980–81 pre-season friendly campaign).
Allen skrev kontrakt med Arsenal i someren 1980'erne for £1,25 mio., men han spillede ikke en eneste rigtig kamp (selvom han spillede tre venskabskampe i sæsonen 1980-81).