In
Frank Onyeka (£9m, FC Midtjylland)
Kristoffer Ajer (£14.1m, Celtic)
Myles Peart-Harris (free, Chelsea)
Yoane Wissa (undisclosed, Lorient)
Alvaro Fernandez (loan, Brentford)
Mathias Jorgensen (free, unattached)
Out
Arthur Read (undisclosed, Stevenage)
Ellery Balcombe (loan, Burton Albion)
Emiliano Marcondes (free, Bournemouth)
Henrik Dalsgaard (free, Midtjylland)
Luke Daniels (free, Middlesbrough)
Aaron Pressley (loan, AFC Wimbledon)
Patrik Gunnarsson (loan, Viking)
Halil Dervisoglu (loan, Galatasaray)
Brentford total spent to date: £23.1m
Brentford total received to date: £0m
Brentford net transfer balance: -£23.1m