Chelsea are set to fail in their bid to sign Bayer Leverkusen star Leon Bailey next month.

The club are looking to add at least two new players to the squad when the January transfer window opens and Bailey has been earmarked as one of their targets.

Bailey, who joined from Genk for £13million in January, is an attacking winger who has scored seven goals and created four assists for the Bundesliga side this season.

Chelsea have been monitoring the 20-year-old's progress since he made his professional debut for Belgian side Genk in 2015 and went on to win the Young Footballer of the Year award.

The Blues were hoping to succeed with an offer of around £20m, but Bayer Leverkusen are determined not to sell their prize asset.

Bayer Leverkusen's sporting director Rudi Voller said: “We have proven many times that we can say ‘no’. We are very relaxed."

Chelsea are also keen on Monaco star Thomas Lemar and will make another attempt to buy Everton midfielder Ross Barkley after a £35m deal fell through on deadline day last August.