Gittens struck once and created two others as Chelsea won 4-3 on Wednesday night.
"It felt really special to score my first goal for Chelsea, and to win the game and get through to the next round was even better," said the Blues winger afterwards.
"I’m more pleased that we got through to the next round today – I’m really happy. My team-mates have been really good. They’ve been talking to me individually, helping me with what to do and what not to do on the pitch. Everyone has helped and put an arm around me.
"I love playing with everyone here – they’re so talented, and they understand the game. They are so intelligent, and they know what to do. Playing with them is like an honour."
