Matheus Cunha has set tongues wagging at Old Trafford after making a startling claim that one of his own Manchester United teammates is deliberately working against him. The Brazilian forward, who only joined the club this summer, says the issue goes far beyond competition for places—it feels personal.

Speaking after a recent match, Cunha made his feelings clear, saying he has noticed this player’s negative energy towards him from the very start. According to him, the signs have been obvious: the way the player speaks, reacts, and even carries himself around him suggests open hostility rather than healthy rivalry.

Reports from those close to the situation hint that tensions began the moment Cunha walked into the dressing room. What should have been normal competition for a place in Erik ten Hag’s lineup seems to have evolved into an unspoken feud. Training ground observers claim to have spotted subtle but telling moments—ignored passes, sarcastic remarks, and a lack of enthusiasm when Cunha finds the net in practice.

The allegations only add to the narrative that Manchester United’s dressing room has long been a battleground for egos and rivalries. Past disputes have spilled into public view, and this new revelation threatens to deepen the cracks. What makes the matter even more striking is Cunha’s own reputation; at his previous clubs, he was known for being upbeat and easy to get along with, so his decision to speak out suggests he feels the situation has reached a point where silence is no longer an option.

Fans wasted no time reacting online, with theories flying about the identity of the unnamed player. Some believe it’s a senior squad member protecting his influence, while others think it’s a direct positional rival who feels threatened by Cunha’s arrival. Calls are already mounting for Ten Hag to address the matter before it begins to affect the team’s performances.

Whether this internal tension can be resolved remains to be seen. For now, it’s clear that Manchester United’s challenges this season are not confined to the pitch—there’s another battle being fought behind closed doors, and its outcome could shape the futures of more than one player.