Chelsea have confirmed that they have agreed terms with Barcelona for Oriol Romeu.
Skysports.com revealed earlier this week that talks between the two clubs were ongoing over the highly-rated 19-year-old.
The teenager is now due in West London to undergo a medical and finalise the move, although he is currently on Under-20 World Cup duty with Spain.
Romeu has played for Barca's first-team but they have agreed to his sale after Andre Villas-Boas made his move.
It is believed a deal worth around £5million has been agreed between the two clubs.
"I don't want to speak too much about him because he is not our player," said Chelsea boss Villas-Boas.
"It is a part of the squad in which we are struggling with numbers because of Michael Essien's injury and Oriol is a player with a bright future. He still has to evolve as a player.
"The Barcelona B team had a magnificent year in the Spanish second division, they finished third. Oriol had an injury during the season but he came back late on and was in time to play for the first team.
"So he is one of the most promising young players in that position and hopefully we can agree personal terms and hopefully he will pass a medical."
Meanwhile, Villas-Boas insisted that a deal to send new goalkeeper Thibaut Courtois - who is arriving from Genk - on loan to Atletico Madrid was not yet complete.
"It is also a question of time and of deciding where we think it is better for him to evolve as a player, in Spain or in another country,' the manager reported.
"The Spanish League is an extremely competitive league and Atletico is a great club to be at but it is not decided yet on his future.
"It is still a couple of days until we can confirm agreement between all three parties."