has no doubt that he will soon be back to his best after signing a new five-year deal with Manchester United.[LNB] The England forward ended an intense week of speculation about his future yesterday lunchtime when it was confirmed he had agreed a new contract with the Old Trafford outfit.[LNB]Rooney will become the highest-paid player in United history, set to earn around £150,000-a-week, having received assurances from the Glazer family about the future direction of the club.[LNB]But he will not be able to assist United on the pitch for a little bit as he spends the next three weeks recovering from an ankle injury, which was the cause of so much angst in the first place.[LNB]The recovery period will probably include the first Manchester derby of the season at Eastlands on November 10.[LNB]However, when he does return shortly afterwards, Rooney is determined to shake off the lethargy that has seen his form collapse to the extent that he has not scored a goal in open play since March.[LNB]"I certainly can't wait to pull on the red shirt again," he told MUTV.[LNB]"I am gutted to be injured. I just want to be out there playing, get back to form and doing what I do best. And I will be back to my best. I have no worries about that."[LNB]Rooney is aware of the upset his outspoken comments, questioning his team-mates' talent, have caused.[LNB]He has already been assured of Sir Alex Ferguson's support and Rio Ferdinand has given dressing room approval.[LNB]In all probability, United's supporters will be bellowing from the rafters too.[LNB]But if there are any remaining dissenters, they will be won over in the only way the Merseysider knows how.[LNB]"I am sure the fans have been upset over the past few days with everything they have heard in the media," he said.[LNB]"But I care for this club. I want to be here and I want to continue being successful at this club.[LNB]"It might take time with some fans. But I am going to be giving 100%, the same as always, to try and build that relationship back."[LNB]If there is one thing United's fans should be thankful for, it is that assurances have been received from the Glazer family about funding for the future.[LNB]"I have spoken with the manager, David Gill and the Glazers," he said.[LNB]"All of them have confirmed to me this is the right club to be at and this club will continue being successful and winning things."