Luiz Felipe Scolari admits it's pleasure to work with his current Chelsea squad.
Asked to compare Chelsea with his former teams, Scolari said: "It's a different situation. When I was in Gremio, we built one fantastic team with young players from the club's youth set-up and some players the other teams didn't want.
"After one or two years, we had a really good team. We won the Copa Libertadores and other titles.
"At Palmeiras, they had good players and, after a year and a half, we put young players in the team and won the Libertadores again.
"But this team I'm coaching now is a team that is happier in training than any other team I've had in my life. I've seen passion and professionalism. It's one of the best teams I have worked with."