Manchester United fullback Luke Shaw has hailed the impact of Lisandro Martinez since his summer arrival.

His impact on the left-side of United's defence has also been felt by those who play alongside him at left-back, with Shaw a huge fan of the summer signing.

"(He has been) unbelievable, to be honest," Shaw told reporters after United's draw with Newcastle. "You can see everyone loves him. The fans love him.

"His left foot is unbelievable. I think it always helps when you play with a left-footer on the side because he naturally likes to come out to that side, and I think he has fitted in really well. Of course, he can keep getting better and better, but for me so far, he has been unbelievable this season.

"He needs to keep that up. His aggression, his passion, we need him in that backline. He brings that every game. I am really pleased to have him in the team."