This time last year, Aston Villa and Tottenham were guilty of playing reserve players because of the fixture pile up, but Duff says that he can’t see this happening at Fulham because the squad is big enough.
Duff’s winner against Everton on Sunday has filled the side with confidence ahead of the game with CSKA Sofia in Bulgaria on Thursday.
Duff said: "We're not planning on letting Europe become a major negative factor. Obviously the travelling can be hard at times but the group we've been drawn in gives us some nice games, which will give the whole place a lift.
"Hopefully we can carry that into our league programme. I think it's exciting and when you're excited you're not thinking about burning out."