Chelsea face a battle with Premier League rivals Manchester City for the signature of Daniel Carrico from Sporting Lisbon.
Portuguese newspaper O Jogo state that the 22-year-old Sporting captain has been observed on numerous occasions by both sides.
Carrico, who is seen as one of the most promising centre-backs in Europe, is tied down until June 2013. He is reportedly valued at around £15m.
By Rob Morris for Clean Sheets All Round
[bet_365 type='odds' size='300' af_code='365_050711']