Edit2 – When a man inherits his father’s fortune he is shot while he sleeps, he wakes to his final day on earth rewinding around him and must figure out who shot him before he bleeds to death.

You must explain the connection between the main character being shot and him havin inherited his father's fortune. Does the shoter wants to steal the money? If so, write it.
"When a man, who has recently inherited his father's fortune, gets killed in his sleep and wakes up again to face his final day on earth, he must figure out who shot him before night falls." If you use "before he bleeds to death" it sounds like he wakes in the morning and is already bleeding; and therefor wouldn't live for very long anyways.

Alas, the revised version is too long (48 words) and too complicated.?

And it needs a ticking clock, a deadline.? Unless it's a "Groundhog Day" scenario where he keeps reliving the last day of his life culminating in his brutal murder until he figures how who did it -- and why.? But I don't know which way you intend to go with the concept.

fwiw

Alas, the revised version is too long (48 words) and too complicated.?

And it needs a ticking clock, a deadline.? Unless it's a "Groundhog Day" scenario where he keeps reliving the last day of his life culminating in his brutal murder until he figures how who did it -- and why.? But I don't know which way you intend to go with the concept.

fwiw