Manchester City midfielder Nigel de Jong insists there's no concerns after defeat to Sunderland.

The loss has not dented the Blues' confidence going into the second half of the campaign.

De Jong told City's website: "We are still top of the table - it would have been nicer to to have a three-point difference over United and the rest of the teams, so it's disappointing in that respect.

"But we are the leaders, and we just have to get ourselves back on track in the next game."