The Sun has reported that Chelsea have joined their London rivals in the chase for Wolves winger Helder Costa. The former Benfica man completed a permanent move to the West Midlands club in January for a club record fee.
Born in Angola, Costa moved to Portugal as a youngster where he joined Lisbon side Benfica in 2004 on a youth contract.
He has represented Portugal at all youth levels, making the 2013 U19 European Championships team of the tournament.
At club level, Costa spent considerable time in the Benfica B-side, only making one appearance for the first-team against Gil Vicente in the Portuguese League Cup.