Manchester United goalkeeper David de Gea insists he is “happy” with his form of last season – despite a string of high-profile errors – and says contract talks did not impact his performances.

After two years of negotiations, this week United and De Gea reached an agreement on a four-year contract extension, which includes a club-held option for a further 12 months.

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The negotiations coincided with, perhaps, his biggest slump in form since joining United – in the final few months of last season – and

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Ole Gunnar Solskjaer says De Gea has boosted the United squad by extending his contract

Ole Gunnar Solskjaer says De Gea has boosted the United squad by extending his contract

“You can say the contract is there in the background – it’s not even in the back of your mind – that’s put to one side. The day-to-day training, going out on the pitch, that’s what you’re focusing on – and helping the team, of course.

“Talking about the odd mistake, form can come and go with any player, but you are more under the microscope when you’re a goalkeeper. It’s not easy to keep up very high standards.

“I’ve been here for a number of years now and to be on top form all the time it’s tough. There are moments when you feel better in yourself form-wise and moments where you’re not quite so good. Mistakes happen, goalkeeper’s live with them and I’m no different.”

United manager Ole Gunnar Solskjaer said, after De Gea’s renewal was announced, that the Spaniard is “vital part of our plans as we look to take Manchester United back to where it belongs”.

Solskjaer was 'delighted' by De Gea's decision to stay at United Solskjaer was 'delighted' by De Gea's decision to stay at United Solskjaer was ‘delighted’ by De Gea’s decision to stay at United

And, it would appear, that De Gea is looking forward to working alongside the Norwegian at United for years to come.

“He’s been here at the club for many years and he knows the club really well, he knows the ins and outs of the club, how it works and the people here as well,” added De Gea. “He’s a great person and a great guy, and the main thing is that the players, the squad are right behind him.