He would then sign a contract with the Philadelphia Eagles of the NFL .
Mackey would sign a letter of Intent to play football at Bethune - Cookman University ( Formerly known as Bethune - Cookman College ) and become an All - American in 1975 .
Mackey would then sign a contract with the Philadelphia Eagles of the NFL .
Mackey would sign a letter of Intent to play football at Bethune - Cookman University ( Formerly known as Bethune - Cookman College ) and become an All - American in 1975 .