I agree it is still too early to ensure Chelsea will qualify for the next round, because there is still a second leg where Atletico Madrid could beat Chelsea
by more than one goal. Because Chelsea's position is not completely safe. However, Chelsea will not bear the burden as big as Atletico Madrid in
the second leg, because they have won in the first leg. Regarding Olivier Giroud's goal, I must admit that it is very beautiful goal, because not many
players can score goals with an overhead shot.
Giroud is the player for moments like that goal. He is striker who contributes very well for the team tactics like Roberto Firmino in Liverpool. They are not strikers can be assessed simply from total goals they score.
Did you recall that French national team won the World Cup with Giroud as their main striker? He played all matches but did not score a single goal in that tournament.
The match between Chelsea vs Man United is tough to predict because both teams are almost equal and currently they were both exhausted from their busy schedule. Although this match will be held at Stamford Bridge but in the last 2 years, Man United has a good record when they come to Stamford Bridge.
I think the match will be very tight with the high tension throughout the game and a draw is the most likely outcome in this game.
I will choose Chelsea because the dependence of Manchester United on Bruno Fernades is well known. Solskajer with 4 goals to lead after the first leg in Europa League still abused Bruno's energy. I doubt that Bruno can bring his best to the match against Chelsea and if Bruno can't, Manchester United will play without their key maker.