Transfer windows are not won by collecting names. They are won by solving problems.
For United, the defensive question has lingered for too long:
A club can live with one weakness. It struggles when that weakness sits in the spine of the team.
This is not just about replacing one player or reacting to one bad result. It is about squad design. If a team wants to press high, hold territory and control matches, the defenders have to support that plan. They need to defend big spaces, step into midfield and stay available across a long season.
That is why the criticism lands. If United have spent time exploring other areas while the defence still appears to need attention, the priority call can be questioned. Other reports suggest rival clubs are still moving aggressively in the market, while United have also been linked with options outside the back line. That only sharpens the debate.
Delaying a defensive fix usually creates a bigger problem later:
If Manchester United do not move now, the story will not disappear. It will follow them into the next run of fixtures, and every shaky defensive display will revive the same question: why was the need not addressed when the window was open?