Manchester United's Rasmus Hojlund, left, celebrates after scoring during the Europa League soccer match between Viktoria Plzen and Manchester United at the Doosan Arena in Plzen, Czech Republic.

Plzen's Pavel Sulc, centre, challenges for the ball with Manchester United's Noussair Mazraoui, right, and Manchester United's Lisandro Martinez during the Europa League soccer match between Viktoria Plzen and Manchester United at the Doosan Arena in Plzen, Czech Republic.

Manchester United's Rasmus Hojlund, left, scores his side's opening goal during the Europa League soccer match between Viktoria Plzen and Manchester United at the Doosan Arena in Plzen, Czech Republic.

Manchester United's Rasmus Hojlund, right, challenges for the ball with Plzen's Sampson Dweh during the Europa League soccer match between Viktoria Plzen and Manchester United at the Doosan Arena in Plzen, Czech Republic.

Manchester United's Casemiro, right,challenges for the ball with Plzen's Prince Kwabena Adu during the Europa League soccer match between Viktoria Plzen and Manchester United at the Doosan Arena in Plzen, Czech Republic.

Plzen's Matej Vydra, right, celebrates with teammates after scoring his side's opening goal during the Europa League soccer match between Viktoria Plzen and Manchester United at the Doosan Arena in Plzen, Czech Republic.

Manchester United's goalkeeper Andre Onana in action during the Europa League soccer match between Viktoria Plzen and Manchester United at the Doosan Arena in Plzen, Czech Republic.

Plzen's Matej Vydra, left, challenges for the ball with Manchester United's Lisandro Martinez during the Europa League soccer match between Viktoria Plzen and Manchester United at the Doosan Arena in Plzen, Czech Republic.

Plzen's Lukas Cerv, left, challenges for the ball with Manchester United's Matthijs de Ligt during the Europa League soccer match between Viktoria Plzen and Manchester United at the Doosan Arena in Plzen, Czech Republic.