Millwall have agreed a deal with Wycombe Wanderers to sign Paris Cowan-Hall for an undisclosed fee in January.
The winger has already completed a medical and will join the Lions on a two-and-a-half-year deal which also sees Fred Onyedinma, already on loan at Wycombe from Millwall, extend his stay until the end of the season.
On Cowan-Hall's arrival, Millwall manager Ian Holloway told the club website: "I think the fans will love Paris.
"We have been crying out for someone like him - that player who can run with the ball.
"I'm really excited to get him here. He can play wide right, wide left or up front, so he has that mobility and hunger. He has been playing a fluid role at Wycombe."
The 24-year-old scored in five consecutive League Two games earlier this month to help Wycombe go joint-top of the fourth tier.