this is the result beyond many people's expectations, Arsenal this season is very good, they are the leaders of the Premier League standings, in this second leg match they are very favorite to win but in fact a surprise happened at the Emirates Stadium.
Pedro Goncalves' goal was really very spectacular, and after that goal, the mentality and enthusiasm of the Sporting CP players increased again.
That goal was spectacular and barely happens but he made it. That goal is important for Sporting Lisbon to equalize the match and avoid a collapse if they get a second conceded goal. After that, their goalkeeper made some excellent saves including ones in last minutes. In penalty shootouts, Adan made a save against Martinelly and brought Sporting to quarter finals.
I don't think that defeat is fair for Arsenal after two matches but it's football and they have to accept it, learn some lessons especially Martinelli and move on.
there is no other possibility for Arsenal except to focus on the Premier League, but I hope this defeat does not affect the mentality of the Arsenal team to prepare for the next match in the Premier League.
In Premier League, they learned some lessons from the past season when they lost a position in top four in last week day and now they have to apply those lessons at higher level, to avoid losing Premier League title in next 11 week days.