Mourinho wanted another central defender during the transfer window and Neville believes his former club are paying the price for not strengthening at the back.
United's executive vice-chairman has spent almost £400m since appointing Mourinho two years ago, but was reluctant to pay what he felt were inflated prices for Leicester's Harry Maguire, Bayern Munich's Jerome Boateng and Toby Alderweireld of Tottenham. It's too late for that, Mourinho has already been given a contract extension - back him until the end.
'It's painful to think how it's played out these last five or six years, ' he added.
Many are beginning to doubt Mourinho's reign in charge at Old Trafford after an average pre-season and a lack of transfer activity, but one fan has gone to new extremes in a bid to get rid.
A new centre-back was Mourinho's top priority amid links with Tottenham star Toby Alderweireld and Leicester City's Harry Maguire but neither were signed, and United's partnership of Eric Bailly and Victor Lindelof were exposed at Falmer Stadium - defensive errors contributing to the Red Devils' first loss of the season. They took the lead in 25th minute through Glen Murray, as United's defence got narrow. From a board perspective, it has been messy over the last couple of weeks. "They had more anger than us and that showed on the pitch", Pogba told Sky Sports.
'Don't get me wrong, the club have given him a lot of money but don't three-quarters build a house. Romelu Lukaku nicked the ball of Lewis Dunk and after a quick counter-attack gave the Belgian a decent chance at goal, Lukaku snatched at the shot and it went wide. "United need serious football people to guide what they are doing".
Lee Sharpe was speaking at the McDonald's & West Riding FA Community Football Day in Bradford. 'There are heads of recruitment and sporting directors.
Turkey fires back with tariffs on US cars, alcohol, tobacco
Turkish President Tayyip Erdogan meets with Emir of Qatar Sheikh Tamim bin Hamad al-Thani in Ankara, Turkey August 15, 2018. Erdogan has warned Turkey could seek alternative partners, pointing to Ankara's strong ties with Russia, Iran and China.
"The CEO sat in his spot for two minutes after the game on Sunday in what I can only describe as something I don't want to see the CEO of Manchester United do".
Finally, the Manchester United boss brought some light to Alexis Sanchez' injury, stating, "It is not a bad thing".
Cracks began to appear last season as, despite a considerable outlay on transfers, United were blown away by Pep and his Cityzens who won the league easily.
"Mourinho talks about class (he accused Manchester City of lacking it by making their Amazon TV series) but that is the sign of class in my eyes".
In fact, it has only happened three times in 26 years of Premier League football.