Chelsea boss Jose Mourinho has stressed the importance of his side beating Levski Sofia on Tuesday to finish top of their Champions League group.
Chelsea match reaction to follow later.
The Blues are already through to the knockout stages but could be overtaken by Werder Bremen if the Germans win at Barcelona, and knock out the Catalans.
"The good thing is the first team in the group plays the second game at home in the next round," said Mourinho.
"This game is not one where we can relax because we need a result."
Mourinho, who has reportedly recovered from an acute migraine, may have made wholesale changes if his side's place as group winners had been booked but he will now limit his tinkering.
It would be better for us if they (Man Utd and Arsenal) both qualify and go through Jose Mourinho
He added: "I will give a rest to Claude Makelele because he needs that, John Terry is suspended and Ashley Cole will be on the bench but after that I will try and play with my best team."
"The motivation for us is to finish top. We know if we lose the game we are not first in the group.
"We know if Werder Bremen win, we need to win to be first in the group.
"Because we won't know how the game in Barcelona will end, we have to think of all possibilities. We must win the game to finish top."
Mourinho is also keen for Premiership rivals Manchester United and Arsenal to reach the next stage of the Champions League.
