Fonseca's expected 4-3-3 will look to dominate the ball and pin Rennes back. The midfield trio of Tyler Morton, Tanner Tessmann and Noah Nartey — as seen in the Anderlecht win — offers a blend of legs and composure, while the front three of Lois Openda, Keito Nakamura and Kaïl Boudache have the pace to stretch any back line. Rennes are likely to set up in a 4-4-2 under Haise, a shape that can become a low block when they're under the cosh. The battle in the half-spaces will be crucial: Lyon's full-backs, likely Ruben Kluivert and Clinton Mata, will push high, and Rennes will look to spring the counter through Ludovic Blas and Estéban Lepaul. But the visitors' midfield duo of Valentin Rongier and Mahdi Camara will have their hands full tracking Lyon's runners. Set-pieces could be a wildcard — Rennes have the height of Charlie Cresswell and Anthony Rouault, but Lyon's delivery from wide areas is a constant threat.