Rico Henry has signed a few four-year contract at Brentford.
The left-back was linked with a move to Celtic earlier this month but West London Sport revealed he was in line for a new deal.
Henry, 22, is now under contract at Griffin Park until 2023.
Head coach Thomas Frank told the club website: “Rico has been very unlucky with injuries over the last couple of years, but he has been flying so far this season.
“I feel that Rico can be the best full-back or wing-back in the league and I look forward to seeing what he has to come.”