Former Chelsea and Barcelona striker Eidur Gudjohnsen says the Blues can win at the Nou Camp in their Champions League semi.

Gudjohnsen, 33, who also played for Barcelona, says Roberto di Matteo's side can cling on to their 1-0 lead in Tuesday's second leg at the Nou Camp.

"Chelsea have given themselves great hope by the way they defended at Stamford Bridge," said Gudjohnsen.

"They rode their luck a little bit but they believe they can win."