Speaking to Casino Hawks, former Chelsea winger Nevin believes Man United let the 28-year-old leave on the cheap, and suggested the West London club should have snapped him up.
McTominay left his boyhood club for Napoli back in the summer of 2024 for a reported fee of just £25million.
The Scotland international has gone on to become a key player for Antonio Conte as his side push for the Serie A title, scoring seven goals and providing two assists across all competitions.
Nevin said: "I think Scott McTominay was worth £50 million before he left Manchester United.
“It was a monster mistake by United. If you asked any Scottish people when he left for £25million, everybody went, you what?
“After what he'd been doing for Scotland after that period he'd had in the team for Manchester United when he suddenly was moved a lot farther forward and showed what he's good at in his best position.”
He also claimed Chelsea should have gone in for him, saying: "I know West Ham wanted him, but I'd have taken him at Chelsea in a heartbeat. Absolutely. I mean, he really has that much quality. Is he worth £50 million now?
“Yes. But he was before. I’m delighted for him. I'm not even mildly surprised at how well he's done in Italy. Not even slightly."
loopholes
54
Man United has too much money. They are the type to buy a player like Antony for 100 million and will allow Messi to leave free. Just man u things
JumaTurabs
46
he was MU's saver when they needed one