Bayer Leverkusen coach Peter Bosz insists he has no concerns over Kai Havertz's commitment levels, vowing the Chelsea target will be the first name down on his team-sheet to face Rangers.
The Germany winger is reported to be close to a £70million switch to Stamford Bridge.
But Bosz does not believe the 21-year-old will have his mind in London when his current employers reacquaint themselves with their Europa League rivals from Glasgow after a five-month break.
Havertz scored the opener from the spot at Ibrox as Leverkusen claimed a 3-1 first-leg lead and are now looking to finish the job at the BayArena.
"I will answer these questions very shortly," said Bosz at a press conference. "Yes, he will play and yes I'm convinced he's 100 per cent still fighting for Leverkusen."
While Havertz is available, Dutchman Bosz has been hit with a selection dilemma ahead of the last-16 return clash.
Paulinho will miss out after rupturing his cruciate ligament and Dutch winger Karim Bellarabi is struggling with a muscle problem.
Midfielder Nadiem Amiri is also out having been placed in quarantine.
To make matters worse, midfielder Kerem Demirbay and right-back Mitchell Weiser are both suspended, meaning Bosz will have to put his trust in playmaker Charles Aranguiz and left-back Wendell, despite both being just one more booking away from missing a potential quarter-final clash against Inter Milan or Getafe.