Sibierski told the Evening Chronicle: “We had to win for them against Fenerbahce.
“The main thing was to get the victory for the fans after what happened against Bolton.
“But that was also my first goal at St James’ Park and that is very important for my confidence.
“Perhaps the fans did not expect me to sign for them before the transfer window, but I have to say they are brilliant and they have made me feel welcome with their support.
“That’s important for me, even aged 32 you still need confidence and because they are great fans they give you that.
“We kept a clean sheet and we did very well on the night.
“We can be pleased with that and you always want to win at home.”
He added: “I made many, many runs into the box and when you don’t play every week you need to be very fit.
“My belief is that if you make enough runs and show enough commitment, you deserve to score.
“That’s what happened – and with one touch I have found the net.”