The 19-year-old centre-back, who has made a big impression since his arrival from Fiorentina in August, is unfazed by the prospect of playing five games in the space of 15 days.
Matija Nastasic: "To me it is not a problem.
"I am always happy when I am playing, so this time of the season makes me happiest of all!
"My father and mother are here, so I won't miss my family.
"I don't look at the two long away trips as a problem at all.
"Now we concentrate on the Sunderland game, and then we focus on Norwich - it's not a headache.
"The league in Italy stops, and we have a break, but playing here is no problem for me. I am looking forward to the next couple of games.
"We knew the game against Reading would be difficult because it was obvious they would just come and defend, but we deserved the goal in the last minute.
"Reading played 11 men behind the ball, in a small area which always makes it very difficult to attack - but that was their game plan.
"We are a very strong team, self-motivated and full of confidence at the moment. What is important is that we keep the same attitude, if we want to win the Premier League.
"We won the game, and that is the important thing."