The 65-year-old signed the striker during a spell as Juventus manager and admitted his defense will have to work hard to deal with the Swedish danger man.
"Ibrahimovic is a really good player who can decide a top-level game in a single moment," Capello told reporters. "I bought him as Juventus manager and for this reason, I know how important he is for Sweden and what a real danger he is for every opponent."
The Italian went on to praise the discipline of Erik Hamren's side and insisted that England will face a difficult task in overcoming its opponents on Tuesday.
"They are really good and play in a very organised way," he continued. "Everybody knows what they need to do in every moment of the game. It is a little country with a small population but it's always difficult to beat Sweden."
How do you stay up with football when on the move? With http://m.goal.com – your best source for mobile coverage of the beautiful game.