Chelsea have sent young defender Slobodan Rajkovic to Steve McClaren's FC Twente on-loan.
The 19-year-old is no stranger to the Eredivisie, having made 13 appearances during a loan spell at Dutch champions PSV Eindhoven last season.
The former England manager told the club's official website: "I am pleased that we could add such a young player with all his qualities to our squad.
"Chelsea have already seen his qualities and therefore signed him. I saw him play with PSV in the past season against Fiorentina in the UEFA Cup.
"When we got the opportunity to add him to our group we immediately did so.
"Many clubs, especially in England, wanted his signature. I want to have as strong a squad as possible with competition for places in each position. And he can play in several positions in defence."