Allen ya sayi ƙungiyar Portland Trail Blazers NBA a 1988 daga mai haɓaka kayan ƙasa na California Larry Weinberg na dala miliyan 70. Ya kasance mai mahimmanci a cikin ci gaba da kudade na Moda Center (wanda aka sani da Rose Garden), filin wasan da Blazers ke wasa. Ya sayi filin wasan a ranar 2 ga Afrilu, 2007, kuma ya bayyana cewa wannan babban abin ƙima ne da kuma kyakkyawan mataki ga ikon mallakar. Allen mallakar Trail Blazers ya kai wasan karshe sau 19 ciki har da NBA Finals a 1990 da 1992. A cewar Forbes, Blazers an kimanta su da dala miliyan 940 a 2015 kuma sun kasance No. 12 daga cikin kungiyoyin NBA 30. Tambaya: Yaushe Allen ya sayi ƙungiyar?
Shekarar 1988