Brentford have signed defender Jake Bidwell for an undisclosed fee from Everton.
The 20-year-old left-back has spent the best part of two seasons on loan at Griffin Park and has now made a permanent switch to west London on a three-year contract.
Bees sporting director Mark Warburton told the club website: "We are absolutely delighted to see a young player of Jake's talent and ability commit his long-term future to the club.
"Over the last two seasons Jake has delivered a consistently high level of performance and his desire and determination to give everything to the cause has been clear for all to see.
"He has displayed a maturity beyond his years and his all-round professionalism both on and off the pitch is an outstanding example for all other young players.
"For Brentford Football Club it is vital that we secure the quality of player that will give us very real opportunity to achieve our long-term goals.
"With Jake committing in this way, it is another very positive step forwards and we look forward to watching his continued progress in the seasons ahead."