Islam Feruz and Jeremie Boga grabbed the goals that sent them on their way to join Spurs and Aston Villa in the next round.
Chelsea were in control from the start of the game with Lewis Baker mustering their first chance early on.
As you’d expect though, Barcelona came on strong and Todd Kane saved the Blues’ blushes however as he cleared Fernando Quesada’s effort off the line in the 11th minute. This was followed by another goal-line clearance – this time from Alex Davey.
It was Kane who set up Feruz to score Chelsea’s opening goal. Boga found Kane unmarked just inside the box and his inquisitive first time switch to Feruz left the former-Celtic striker the easy task of slotting it into an open goal.
Connor Hunte was sent off for Chelsea two minutes into the second half to give Chelsea a mammoth task of defending their lead.
Predictably, Barcelona pushed on strong and were denied on many occasions, but it was on the counter attack that Chelsea found their winner when Boga was set off, weaved his way into the box and found space to fire into the bottom corner and making sure of their place in the next stage of the competition.