Gary Neville believes Erik ten Hag's lack of a consistent playing style or identity was his biggest failure at Manchester United and expects another painful rebuild at Old Trafford.

Ten Hag was sacked after just over two years at the helm on Monday, in the wake of Sunday's demoralising 2-1 defeat at West Ham.

That loss left United 14th in the Premier League table with just 11 points from nine matches. Only under Ole Gunnar Solskjaer in 2019-20 (10) have they had fewer at this stage of a campaign.

Former United right-back Neville, who defended Ten Hag when his position was questioned following an eighth-place finish last term, now concedes the Dutchman failed to oversee any significant progress in terms of results or style.

Asked whether Ten Hag should have departed in pre-season, when he instead penned a new contract, Neville told Sky Sports: "Those that felt it should have happened will feel they've been proven right.

"However, there were hundreds of thousands, even millions, of fans who wanted to continue with Ten Hag, to give him a chance to succeed under a new structure.

"The shock for me has been how bad they've been with the new signings coming in, with Ten Hag having some stability. To be 14th is unacceptable with that level of spend.

"I think the lack of identity or style has been a real mystery for the last two and a half seasons.

"Even though the recruitment has been awful at times, I do believe there's a group of players there that can play a lot better than they are, if you put an identity into them.

"Yesterday I was shocked to see Casemiro and Christian Eriksen in midfield with [Manuel] Ugarte on the bench. If I was an owner, I'd be asking questions around that.

"It's a real struggle watching United play and that hasn't changed in 18 months, that's been as big a problem as the results."

United struggled for control throughout Ten Hag's reign, with their 136 expected goals against (xGA) since the start of 2022-23 the fifth-worst figure of all ever-present Premier League clubs.

They have also underperformed their underlying attacking figures by a greater margin than any other top-flight team this term, scoring eight times from 14.56 xG.

United also faced 1,739 shots in their 128 games under Ten Hag. Since 2022-23, Manchester City have faced 717 fewer shots than the Red Devils despite playing six more games in that time.

Former United striker Ruud van Nistelrooy, who was appointed as an assistant to Ten Hag in July, will now take charge on an interim basis.

Neville, however, does not expect much to change in the short term and feels no player should be guaranteed a place when the club appoints a permanent successor.

"He could set the team up differently, but he's been on the bench with Ten Hag so I'd be amazed if something drastic happened," Neville said of his former team-mate. 

"A lot of work needs to be done with those players. Erik ten Hag couldn't get performances out of them and a lot of those players are his players.

"They're not good enough but they are better than 14th, they're probably better than sixth. The new manager that comes in should probably be made to work with these players for seven or eight months to work them out, to figure out who they want to keep close."