Unai Emery wants to create a “new history” with Arsenal as he prepares his side for Thursday’s Europa League semi-final first leg against Valencia.
The contest pits the Spanish boss, 47, against his former club, who he led to Champions League qualification on three consecutive occasions.
“Now it’s the Europa League, it’s both a way to win a title and also a path into the Champions League,” he said.
“We want to treat this semi-final like something important.”
He added: “We need our supporters and we need to create a big atmosphere – we are very excited and with big enthusiasm for the match.
“We are looking forward to playing, to being with our supporters, to doing the first leg’s 90 minutes with a big performance and with a good result. But we know it’s going to be very difficult also. I think we need [it] all. We need the players, we need spirit, we need energy, we need our supporters.”
Arsenal defender Laurent Koscielny paid tribute to Ramsey, who will leave after 11 years at the club.
“What I like about Aaron is that, we know he signs for Juventus, but he is still a professional and always fights for the club and for the team,” said the French centre-back.
“Sometimes you have players who have stopped fighting for this team, but I think he has loved this club and that is why he stayed at 100 per cent for us. It shows a great mentality and character.”