Arsenal defender Bacary Sagna has admitted he was shocked by the sale of Alex Song to Barcelona over the summer.
Song's departure from the Emirates followed that of Robin van Persie, with the Cameroon international joining Barcelona for £15 million soon after the club's star striker had signed for Manchester United.
And Sagna, who is currently recovering from a broken leg, said he understood the fans' disappointment at the departures of two high-profile favourites.
The France international told L'Equipe: "We expected Robin Van Persie to leave, but not Alex Song ... it was a surprise.
"This is a huge loss for the club. When you see two of the best players from last season leave, you ask a lot of questions. I understand that the fans are upset. I, like them, do not quite understand.
"[Song] is 24 years old, and he still had three years left on his contract. I don't understand that at all. You return from holiday, you're preparing, you see two players leave the club ... It's been like that since I have been at the club. I'm used to it.
"I'm the only player from the line-up in 2007 still present. In May, I watched Manchester City's Premier League trophy parade on TV. I saw Samir [Nasri] and Gael [Clichy] lift the trophy. I want that feeling."
The France defender, whose Arsenal contract will be in its final year when the season ends, said there had so far been no discussions about an extension but added: "For now, I just want to play again and get back to a good level with Arsenal. After that, we'll see ... Everyone has their destiny."
The Gunners have made a promising start to the season despite the sales, with Arsene Wenger's side yet to concede a goal.
They claimed their first win of the season at Liverpool on Sunday as summer signings Lukas Podolski and Santi Cazorla scored their first goals for the club.