Manchester United ended the Premier League season with a devastating defeat at Old Trafford against Cardiff City, and Bluebirds manager Neil Warnock has had his say on what is going wrong at the Theatre of Dreams.

Warnock has claimed United needs to plan their moves better.

"United have got to go the way it looks they might be going, even though that's expensive, and that is to bring in the best young players," Warnock told talkSPORT.

"They've done the other way, they've spent £300m or £400m on players who are supposed to be world stars, and yet they haven't got a team. They haven't got a team at all.

"If they bring the young lads they're talking about bringing in, they can mould them, and I think fans will accept 100 per cent effort from young lads.

"[Marcus] Rashford would have to play up front because he's just the best there is when he's playing up front.

"There are one or two decent players they're looking at, like the lad from Swansea [Daniel James]. They need to spend £15m or £20m on them to bring these young lads in.

"Ole and the hierarchy have got to realise that is the way forward for Manchester United because they're a long way behind."