Chelsea boss Roberto Di Matteo is wary of Champions League group opponents Shakhtar Donetsk.

Chelsea survived a scare in Tuesday night's game against Nordsjaelland before scoring three times in the final 11 minutes to seal a flattering 4-0 victory in Copenhagen.

Di Matteo said: "The Ukrainian champions are a very good team, and it's going to be hard for us to qualify.

"For us, it was important to win.

"The scoreline shows four goals scored and none conceded, so that's pleasing.

"Away from home, it's not easy in this competition."