Three Manchester United youngsters were positives vs Rosenborg

Manchester United's pre-season officially began against Rosenborg in Trondheim with a callow squad lacking seniority.

Aaron Wan-Bissaka, Jonny Evans, Casemiro, Mason Mount and Marcus Rashford were the only established first-team squad members to feature in the 1-0 defeat at the Lerkendal Stadium.

United manager Erik ten Hag made ten changes at half-time as several academy players made their first appearance for the senior side. Habeeb Ogunneye, Rhys Bennett, Sonny Aljofree, Harry Amass, Maxi Oyedele, Toby Collyer, Ethan Ennis and Jack Fletcher got their first minutes under Ten Hag.

Here are five talking points from the friendly:

Ten Hag on the lookout

“In my team talk, I said yesterday, Copa America final: involving Alejandro Garnacho," Ten Hag told MUTV before kick-off. "Euros final: Kobbie Mainoo. Last season, same game: Kobbie Mainoo was part of that match.

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"So for them, it is also possible but they have to earn the right to play for the first team of Manchester United. You don't get it, you have to deserve it."

A United season seldom goes by without an academy breakthrough and Ten Hag has taken a shine to midfielder Toby Collyer and left back Harry Amass. Both started on the bench in Trondheim.

Collyer captained United in the second half on his first senior appearance for the club while Amass also emerged for his maiden first team appearance. The 17-year-old Amass's rawness was particularly apparent.

Of the starters, striker Ethan Wheatley was by far the brightest and responsible for United's only attempt on goal.

Mount puts himself about

A midfield duo of Casemiro and Mason Mount was a certainty for the