Harry Potter And The Other Boy Who Lived

Harry Potter And The Other Boy Who Lived,

Arthur Smith is a only child boy that remembers a lot Neville Longbottom from the Harry Potter series.
They both lost their parents when were babies and were raised by their respective grandmothers.
The difference lies in the fact that Arthur is a early bloomer. He is the mental leader of his football team and a very respected figure in his college.
He is getting ready for a job interview when his life changes.

This is a fanfic of Harry Potter. The MC is transported to the body of neville Longbottom, two years before his entrance in Hogwarts. What changes can he possibly change to the history?