RB Leipzig chief Oliver Mintzlaff has been forced to take a stand against transfer interest in star man Christopher Nkunku ahead of the clash with Rangers.
The French talisman was the key man again for Leipzig as they saw off Union Berlin, winning a penalty that helped rescue the German Cup semi-final.
Nkunku has been linked with a host of clubs including Manchester United, Bayern Munich and Liverpool after scoring 17 goals and chipping in with another 16 assists so far this season.