1. Bukayo Saka
This was further evidence, if any was ever needed, that Bukayo Saka is going to be the main man again this season. He caused Milan plenty of problems in the first-half and had a tame shot saved by Terracciano.
Although his set piece deliveries weren't up to his usual standard, Saka's crossing was very dangerous. This may not have been a vintage Saka display but we are already getting a glimpse of what we have grown to expect.
The difference between winning and losing in Europe is so often a single goal. Just as he did so often last season, Saka won the match for Arsenal today. His scuffed effort found the back of the net before he was replaced by Max Dowman in the 66th minute.