Brentford have signed defenders Jake Bidwell from Everton and Harlee Dean from Southampton on youth loan deals.
Bidwell is a left-sided 18-year-old and has represented England at age-group level, including Under-19s.
Dean, a 20-year-old central defender, has been a regular in the Saints' under-21s this season but has yet to make a first-team appearance.
Both players will remain at Griffin Park until 8 January.
Bidwell came through Everton's academy and captained their under-18s to the FA Premier Academy League title last term.
He became the youngest Toffees player to feature in a European tie on his first-team debut against BATE Borisov in a 2009 Europa League game.