Chelsea are scouting Red Star Belgrade's exciting teenage talent Marko Grujic, according to the Daily Mail.
The report claims that the west London outfit are interested in securing the services of the 19-year-old as Jose Mourinho looks to improve his side in the middle of the park.
As well as monitoring Grujic, the Mail claims that the Blues remain interested in Juventus midfielder Paul Pogba.
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The French international, formerly of Manchester United, is recognised as one of the leading young players in world football, but it's not going to be easy for Chelsea to sign him. In fact, the Mail suggests that the trio of Manchester City, PSG and Barcelona are also interested in Pogba, with the latter believing they are favourites to secure his signature.
The Pogba saga may well rumble on for some time to come, but the Blues appear to have a genuine interest in Grujic.
Chelsea reportedly sent scouts to watch the towering midfielder in action last weekend as he starred during Belgrade's 3-1 victory over rivals Partizan.
It's certainly not surprising that Mourinho looks set to enter the transfer market in pursuit of adding to his options in the midfield department.
Nemanja Matic appears to be struggling to replicate last season's form while John Obi Mikel is now recognised as a liability by sections of the Chelsea faithful.
Cesc Fabregas, who scored in Chelsea's comfortable victory against Maccabi Tel Aviv last night, isn't going to protect the club's back four, so it's crucial that Mourinho signs another top defensive midfielder sooner rather than later.
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