Hollywood action man DWAYNE 'THE ROCK' JOHNSON is donating $2 million (GBP1.07 million) to his old college the University of Miami, where he was a star footballer. The money will go towards the construction of an alumni centre on campus, with a room being named after Johnson and his wife DANY GARCIA, who is on the board of trustees. And Johnson will be using his star athlete past for his role in new movie GRIDIRON GANG, where he plays a football coach at a juvenile prison.