He can come back stronger. It’s not the end of him, if he doesn’t want it to end.
Hulk Hogan had his leg broken by his trainer and he came back and had a viable career.
Alex Smith, the quarterback, had 17 surgeries have a similar injury. He eventually came back but one isn't as vulnerable in football as in the UFC coming off an injury like that.
Bad place for a break. Tibia fx frequently go to nonunion because of poor blood supply, especially distally.
He is young so there is less chance of a non union but the position of the break & the force of the trauma increase his chances of nonunion. I wish him good doctors & rapid healing.