Crystal Palace have agreed an initial fee of £18m with Blackburn Rovers to sign midfielder Adam Wharton.
The 19-year-old will travel to London on Tuesday, BBC Lancashire reports, with the fee possibly rising to £22m.
Wharton came through Blackburn's academy and has gone on to make a total of 51 appearances for the club.
The Eagles had an £18.5m bid rejected last week for the England Under-20 player, but have managed to agree a deal with the Championship club.
Wharton - whose older brother Scott also plays for Blackburn - has made 26 appearances this season, scoring two goals.