Crowe will come back from the afterlife somehow. Mythology meets with reality. Rumors also says that Juba and Lucius will have major roles in the movie too. Nothing is sure at the moment of course, hopefully we can gert.
Since Ridley Scott will be the director, everything will be perfect, trust me.
"Training is principally an act of faith. The athlete must believe in its efficacy: he must believe that through training he will become fitter and stronger, that by constant repetition of the same movements he will become more skillful."