The 17-year-old will move to the West London side ahead of the 2020/21 season.
Fin, who played in Arsenal’s academy as a youngster, joined our Under-18s at the beginning of last season, but quickly broke through into the first team.
He made his debut with an impressive performance in our 3-1 victory over Merstham last October, and went on to play 20 times that season. His only goal for the club was a vital long-range effort against Carshalton in February, securing an important 2-1 win over our promotion challengers.
Fin played as both a midfielder and a full-back in Hinsh’s system, looking assured and confident on the ball wherever he was asked to play.
Fin will move to Brentford FC, who are aiming to win the Championship playoffs and compete in the Premier League for the first time next season.
We would like to wish Fin all the best for his future in the game. He is clearly a very talented young player, who is sure to have a bright future ahead of him.