Campbell is a big fan of Jack Wilshere, but feels at 21 too much is being asked of the midfielder.
"Arsenal haven't got the leaders we had," Campbell told the Mail on Sunday. "They haven't got the same characters.
"They have very good footballers, for sure. And Wilshere - he's fantastic, he's great for the future. He knows what it means to play for Arsenal and what it means for the club to win. He's grown up seeing Arsenal win things and compete. So you do need a lot more of his kind of calibre, in different positions."