The England international, who turns 25 on Sunday, has received assurances from the Glazer family that they are committed to keeping United rolling in silverware.
Although Rooney was condemned for releasing a statement on Wednesday night, two hours before the Champions League win over Bursaspor, questioning the future direction of the club, the end outcome has brought reassurance that will go beyond the striker himself.
So many questions have been asked about the Glazers' ability to fund major purchases given the relatively low-key investments since Cristiano Ronaldo's world-record departure.
Few have been able to get any answers, beyond chief executive David Gill and Sir Alex Ferguson.
Rooney did, directly. The responses were enough to persuade him to sign a five-year contract estimated to be worth £40million, which will make him the highest-paid player in United history.
"I care for Manchester United," he told MUTV. "And I had some concerns.
"I made David Gill and the manager aware of them but the contract talks didn't really move forward.
"Once everything become public knowledge over the last few days, it looked as though there was nowhere to go.
"But the manager made it quite clear the door was still open for me to sign. The club still wanted me to sign.
"I spoke to my agent and said 'let's go in and sit down and try to resolve it to get the deal done'.
"Now I have spoken with the manager, David Gill and the Glazers. 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."
Ferguson has never expressed any doubt over the Glazers' commitment. Many supporters have though.
As the talisman of their team and its highest-profile player, some sort of solace can be taken by United fans, even if concern remains about the Glazers' funding of the Old Trafford outfit.
They can also be secure in Rooney's relationship with Ferguson.
At the height of the storm that engulfed United earlier this week, it was hinted strongly that a major rift had developed between manager and player, who were no longer on speaking terms.
In referring to Ferguson as "a genius" in his own damning statement about the club's recruitment policy on Wednesday evening, Rooney quashed that speculation.
Rooney insists Ferguson was not the sole reason for his decision to stay. But he admits the Scot is a powerful influence on his career.
"I am sure it has been difficult for him as well," acknowledged Rooney.
"He has to look after the club and was trying to convince me to sign a new deal at the club.
"He is a great manager. I have said many times one of the big reasons I joined this club was to work under him, with his experience, passion and will to win.
"I wanted to be successful working with him.
"I have managed to do that. I am hoping in the next few years we can do that again."
Rooney has already been assured of Ferguson's support and on his Twitter page, Rio Ferdinand has given dressing-room approval.
"It was never in doubt in my mind," he said "Wazza is Man Utd through and through."
In all probability, United's supporters will be bellowing from the rafters too when Rooney next appears some time in November, once the ankle injury that has ruled him out for three weeks has healed.
But if there are any remaining dissenters, they will be won over in the only way the Merseysider knows how.
"I am sure the fans have been upset over the past few days with everything they have heard in the media," he said.
"But I care for this club. I want to be here and I want to continue being successful at this club.
"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.
"I hope we can work together on this and do the best thing for Manchester United, which is winning trophies.
"I certainly can't wait to pull on the red shirt again.
"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."