The skilful forward was named in the Germany squad for Euro 2012, but only started one game for Joachim Low’s men during the tournament in Ukraine and Poland.
The Blues are on something of an attacking overhaul of their squad this summer, and have already signed another Germany offensive player in the form of Marko Marin.
Leverkusen chief executive Wolfgang Holzhauser has confessed that there has been an offer from the Stamford Bridge outfit, but that the Bundesliga side are not keen to sell.
We were presented with a very concrete offer from Chelsea for Andre of beyond the €20million mark,” Holzhauser is quoted by German news agency SID, translated to English by Sky Sports.
“The sum was pushed back and forth between the two clubs. We ultimately chose Andre.
“Andre is very valuable for us. He has also made it clear he would like to stay with us,” the BayArena supremo concluded.
By Gareth McKnight