Barcelona forward Eidur Gudjohnsen has revealed he has been telling his new club all about his old side Chelsea.
The pair are set to meet in the UEFA Champions League at Stamford Bridge on Wednesday, live on Sky Sports 2, in what should be an epic encounter.
Gudjohnsen is keen for Barca to get one over his former side and has been telling coach Frank Rijkaard any inside information that could help see off Jose Mourinho's charges.
"I've been giving the manager some useful information on the tactics Chelsea are likely to use on the players," said Gudjohnsen.
"I was at the club for six years so know all about most of their guys, their strengths and weaknesses.
"I've also been able to tell the manager about some of Jose Mourinho's secrets - like specific training sessions he worked on to try and beat Barcelona last time we played."