Leon Bailey's agent has confirmed Chelsea have been in contact over a potential transfer.
Craig Butler, the agent and stepfather of Bailey, says his client is unhappy at Bayer Leverkusen, and has also attracted the interest of Real Madrid, Atletico Madrid and Roma.
"I am very happy that this change has come about. Leon did not develop under Heiko Herrlich," he told SportBild.
"For Leon it is very important that he enjoys football, he lives alone in Germany, the family is in Jamaica, and if Leon does not have fun, it kills him.
"Top clubs have come forward, Real and Atletico Madrid, Chelsea, Roma, and in recent months they have been surprised that Leon plays so seldom, wondering why a top league player like him is suddenly sitting on the bench."