Callum Hudson-Odoi has been hailed as an "outstanding talent" by former Germany star Michael Ballack.
Chelsea winger Hudson-Odoi is a transfer target for Bayern Munich, as first revealed by Goal, with the Bundesliga champions' sporting director Hasan Salihamidzic confirming last week that talks remain ongoing between the clubs.
The 18-year-old has earned 10 first-team appearances for the Blues this season but is yet to make a Premier League start and is reportedly tempted by the prospect of greater opportunities with Bayern.
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"We're talking about a player who just came recently from the youth level.