"We have to play a ideal game, we know we are playing against very good players in a tough stadium but we are confident and we will try to qualify".
The diminutive attacker atoned for that yesterday, giving Barcelona a precious away goal as he strode onto a pass from Andres Iniesta in the 75th minute and calmly side-footed the ball home to cancel out Willian's opener for Chelsea 13 minutes earlier.
"If it would have been 1-0 [in favour of Chelsea] then the tie would be much more hard, but the 1-1 [scoreline] has given us life".
Chelsea last made it past the last-16 stage of the Champions League in the 2013-14 season, when they reached the semi-finals. We are playing very well and we also come in front.
Lionel Messi scored his first goal against Chelsea in nine Champions League appearances.
And the Nigeria global who featured from start to finish in the encounter is looking forward to a better outing in the return leg at the Camp Nou on March 14. "An incredible performance", the Italian told reporters.
Christensen has been hailed as one of the best young prospects from Stamford Bridge and has gained the trust of manager Antonio Conte this season with consistent performances.
"He's only 21. It's great that he's able to play this game with this maturity, this personality".
Barca striker Luis Suarez, who was kept quiet for most of the night, said that slip-up could prove crucial.
With the second leg of our game against Barcelona not taking place until the middle of next month, our immediate focus now turns back to the Premier League. Sergio Busquets charged forward to block Willian but ended up on flat on his back after Willian shimmied past him."We gave too much space to Willian to shoot", Valverde said.
"They control the ball, that's normal, that's how they play. They show tonight to be a strong, fantastic team", said Conte.