Chelsea manager Antonio Conte claims that he is suffering from sleepless nights as he attempts to figure out the best way to defeat Lionel Messi, Luis Suarez and their Barcelona teammates in the Champions League.
The Blues are facing a difficult first leg at home, followed by a return leg at the Nou Camp in their round of 16 clash.
Conte will be hoping Chelsea put in two perfect performances so they can progress.
"In these days after the game in the FA Cup, I must be honest, it was a bit difficult to sleep well," he said.
"When you have to play this type of game, you have to prepare. You have to prepare everything. You have to prepare big things, but the smaller details too.
"They can move a result a lot of the time. We have an idea. We have a plan in our heads. I think that, in this specific moment, it's very important to pick the players who are at the top of their form and then try and do our best to win the game."