Euro 2012: Netherlands' Nigel De Jong relishes tough group

Manchester City's Dutch midfielder Nigel De Jong expects the group stages Euro 2012 to be very tough where the Netherlands are joined by Denmark, Germany and Portugal in group B.

De Jong believes there is no weak team in the group and no opponent should be underestimated, adding that his side will need ''100% concentration'' to progress in the tournament.

The Netherlands begin their campaign on Saturday when they face Denmark.