Chelsea have agreed their first signing of the January transfer window in 18-year-old Brazilian right-back Wallace. He will, however, remain on loan at his club Fluminense until the end of the season.
The deal for Wallace was agreed by the club before Rafael Benitez's appointment last month as interim club manager.
The Brazil U-20 international has appeared only 18 times for the Fluminense first-team and will join a growing Brazilian contingent at the club that includes Oscar, Ramires, David Luiz and Lucas Piazon. Under Benitez, the Spanish right-back Cesar Azpilicueta has come into favour.
He said: "I'm not deaf. Yes, we were aware. But it's not our – or my – responsibility.
"The supporters are free to do whatever they want. My job, our job, is to play well and to win. That's all I care about."