"He had a good fight against two good central defender and I am happy with this period and how he fits into - I am never exhausted to repeat - an wonderful group".
The 36-year-old also praised City manager and compatriot Pep Guardiola, who won 21 trophies in seven years while in charge of Barcelona and Bayern Munich before arriving at Man City ahead of last season.
"In our period of dominance he was what we want him to be: to move the ball in a simple way, to give balance to the team, to start building from the back".
Pushed on whether the club had received any offers for Sanchez, specifically from Paris Saint-Germain, Wenger said: 'No, I didn't speak to Nasser (Al-Khelaifi, PSG chairman). For us Alexis Sanchez is a loss, of course.More news: Futures lower as North Korea tensions linger
The rest of the Premier League teams will open up their campaigns over the next two days, but it's unlikely they'll match the entertainment value provided by Friday's opener in London. "Old Trafford is waiting for us and I think Old Trafford has a reason to be behind us", he said. I think he will not play at Stoke.
"No", he replied when asked whether any players are closer to departing the club. "However, just to remind you we have 33 players and they are all good players". The Champions league is really cool because it is a tournament that takes the top teams from all over Europe i.e. Italy, England, Spain, Germany and a few others to decided who the king of Europe is.
'But I don't think I would have included him on Friday night.
He added: "Because Manchester United is a real giant, it doesn't matter if the club is somewhat far away from that level for three, four, five or 10 years". Now they look to get off to a strong start against Premier League new boys Brighton & Hove Albion.