Tuchel said: “City chose a very offensive and very technical line-up. It was very hard to recover the balls.
“It was very important that we step out with Azpi and Toni constantly out of the back five to support our midfield, and it was important to stay in a block on the front five.
“We were absolutely sure that we needed to play with a strong bond and with a genuine belief, and this is what we did.
“Minute after minute we could grab some ball possession, we could win more and more second balls and initiate some dangerous counter attacks which gave us confidence, and from then on it was a tough match until the end.”