Bayer Leverkusen sporting director Simon Rolfes confirmed that "great clubs from Germany and Europe" are interested in Kai Havertz.
The Germany striker impressed at the Confederations Cup in 2017 but he specifically asked to be taken off in a Champions League match.
Chelsea hero Didier Drogba had two meaningful exchanges with Juan Mata as the Blues bounced back to win the Champions League title in 2012.