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Ruben Amorim has told Kobbie Mainoo he still has room for improvement as the Manchester United midfielder prepares to make his comeback from injury.

Mainoo has been included in United’s squad for the Europa League quarter-final clash with Lyon in France on Thursday night following a nine-week absence, although Amorim says he will be careful with the teenager.

But United’s head coach believes he owes it to Mainoo to challenge him to become a better player and find his best position despite already being an established England international.

‘We need to help him,’ said Amorim. ‘Casemiro is playing better because we understand better the way Casemiro can play. I think we can do that with Kobbie because he has a lot of qualities. He is really good on the ball but also near the opponent’s box. We will try to manage all that and find the right space for a player like Kobbie.

‘I think that is also a little bit the problem. When I see Kobbie Mainoo, I see a lot of talent but in the way I see it – I could be wrong, that is for sure – I see some things that Kobbie Mainoo has to improve.

‘The pace during the game, he has qualities we can use, in build-up he needs to improve. Near the box he has a lot of talent. That’s why he did a very good game in the Europa League in that position.

‘When I see Kobbie Mainoo, I see not as a full player in the moment because he’s 19. If I say to Kobbie, ‘no, you are done, you are the final player’, I am not helping Kobbie.’

On keeping Mainoo fit, Amorim added: ‘In this moment we have to be careful with Kobbie. He had some games out so we have to be careful with his fitness. We are really happy to have more options and an option like Kobbie Mainoo with the quality that he has.

‘We are really pleased to have Kobbie Mainoo but we have to be careful, we need Kobbie Mainoo fit and fresh.’