Lachlan Brook joined Brentford B in October 2020 from Australian side Adelaide United.
Lachlan is a product of the Adelaide youth setup and he quickly rose through the ranks to make his debut at the age of just 16 against Jiangsu Suning in the 2017 AFC Champions League. The versatile player, who can play across the forward line, then made his league debut for Adelaide in January 2018 against Sydney FC.
The 19-year-old was recently named Youth Player of the Year for United after impressing within the youth teams in the National Premier League and the Foxtel Y-League. The youngster has also represented Australia at youth level a number of times, and has most recently been involved with the Australian Under-23s side.
After breaking into the First Team at Adelaide, the 2019/20 season saw Lachlan play eight times in all competitions in New South Wales, netting his first goal against Perth Glory earlier this year as Adelaide finished the campaign in seventh place.