Frank Leboeuf claims Real Madrid defenders would find it more difficult if Chelsea have Timo Werner up front ahead of Kai Havertz in the second leg.
Thomas Tuchel is expected to welcome Real Madrid with his strongest line-up on Wednesday.
But how does his strongest eleven even look like?
While Tuchel has shown preferences for certain players in several positions, there are arguably still places up for grabs in the team.
Craig Burley expects Christian Pulisic and Mason Mount to start in the front three roles, but he even was unsure whether the third attacker will be Havertz or Werner.
Leboeuf, on the other, seemed certain that the former would do a better job against Real Madrid.
“A tough question, but I’d still go with Werner,” he told ESPN FC when asked about who should start as the No.9 for Chelsea in the second leg.
The former Chelsea defender made an interesting argument about how missing out on Wednesday could affect Werner mentally.
“I’m afraid you [might] lose him for the rest of the season. He looked so done in Madrid, not scoring goals,” he explained.
“He keeps doing very interesting things; the assist that he gave, keeping the ball and winning a free-kick at the edge of the box [in the Fulham win].
“He lacks confidence but he keeps on trying. He doesn’t give up, and I like the fact that he still tries everything.
“I think, against players like Varane, for example, you need somebody smaller who can disturb him and be fast.
“And it will be the case with Werner instead of Kai Havertz.”