The report says Rooney urged Mainoo to be himself, while praising the way the midfielder handled a demanding season. For a player who came through United’s academy, the endorsement carries obvious weight.
Rooney also reportedly sees Mainoo as an example for young players hoping to make the journey from the youth ranks to the senior team. That connection gives the World Cup story an added layer: Mainoo is not simply representing England, but embodying a pathway familiar to generations of United players.
Mainoo’s selection follows a reported revival in his club fortunes. He is said to have regained importance during the second half of the season under Michael Carrick, helping move him back into the picture for Tuchel’s England.
That renewed status matters. Mainoo’s future at United had appeared less certain at one stage, but he now reaches the tournament with momentum and a chance to establish himself on the international stage.
Jordan has reportedly travelled to the United States and may be able to watch his brother’s first World Cup match in person. The pair, born in Manchester, have followed very different careers, yet Jordan has regularly supported Mainoo from the stands and online.
For Mainoo, that familiar presence could provide calm before a night of enormous expectation.
The next question is whether Tuchel gives him the platform to influence the Croatia match. If he does, Mainoo’s performance could shape both England’s opening result and his place in the tournament’s unfolding story.