Man Utd capitulated in the second half as Bournemouth inflicted another defeat on the Red Devils as their miserable season continues.
Yet again, Man United’s defence showed its vulnerability from set-pieces, allowing the away side to grab an early lead, which handed them all the momentum from that moment on.
The Red Devils went behind when Bournemouth teenager Dean Huijsen opened the scoring with the Spain Under-21 international glancing a set-piece beyond Andre Onana and into the Man Utd net.
Moments after the restart, Onana parried a shot to prevent his side going two goals down. Clearly, United’s defensive struggles have not been resolved.
On the stroke of half-time, Mainoo showed some impressive footwork to dribble past four Bournemouth defenders, only to send his shot wide of the far post. Still, with one minute of stoppage time, United had a bit of time to find an equaliser before the break.
Hojlund replaced Joshua Zirkzee in the 54th minute, while Alejandro Garnacho came on for Manuel Ugarte.
Noussair Mazraoui then gave away a nailed on penalty early in the second half by bringing down Justin Kluivert in the area.
Bournemouth forward Kluivert then stepped up to send Onana the wrong way to double the Cherries lead at Old Trafford on 61 minutes.
And Man Utd capitulated by conceding another just two minutes later with Dango Ouattara picking out Antoine Semenyo inside the Red Devils’ box and the Ghana international kept his composure to finish past Onana.
It is Ruben Amorim’s fourth defeat since taking charge of Man Utd in mid-November with the Red Devils remaining in 13th position in the Premier League table.
Man Utd have now lost seven of their 17 Premier League matches this season and only scored 21 goals with Crystal Palace, Everton, Ipswich Town and Southampton the only clubs to score fewer this term.