Fred Onyedinma has penned a contract extension to keep him at The Den until 2017.
The 18-year-old midfielder is highly regarded by the Lions and enjoyed a successful loan spell with Wycombe towards the end of last season.
Onyedinma struck eight times in 25 games for the League Two side as they reached the play-off final, although he was an unused sub in their Wembley penalty shootout defeat at the hands of Southend United.
The youngster has already made six appearances for Millwall, a tally he is sure to quickly add to next season as the club bid to make an instant return to the Championship.
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