Don't underestimate Senegal the way Deschamps did with Tunisia and France ended up losing with 1 goal. From now on you don't have a second chance, it is whether you qualify or you are out! Rotating his players when he is leading comfortably is a thing and risking a whole game due to miscalculation is another thing.
France will play vs Poland next and I think they took the lesson the hard way.
Senegal will be a tough game for England. Both teams have never played each other before. If Maguire has a good game and can keep Senegal from scoring, England should win.
England is the favourites to qualify between them and Senegal. England has all the armours to fight and conquer Senegal. It would have been a fair balance if Mane was with the Senegalese. But not withstanding, what the Senegal team needs is to be very physical in that match and come out to fight with the England players. Drag possessions with them, they shouldn't sit back