Manchester United are keeping tabs on Sami Khedira as manager David Moyes considers how to bolster his midfield in January.
• Payne: Van Persie in focus
Real Madrid's Khedira revealed United failed at the end of the summer transfer window with a late bid to sign him, which was thought to be worth 40 million euros.
And Moyes sent Phil Neville, one of his coaching staff, to watch the Germany international in Real Madrid's 7-3 win over Sevilla on Wednesday.
United also tried to bring in Real's Fabio Coentrao on loan in September and the Portugal international left-back did not feature in the midweek match at the Bernabeu.
Khedira, 26, was a regular in the Real team in October but said last month that the club had treated him unfairly.
He told Kicker: "I'm not a Spanish player, I did not cost a lot of money and I am one of [former manager Jose] Mourinho's disciples.
"I started the season on the bench or in the stands. Even if I play well, I am the scapegoat and so will not be properly valued."
Moyes signed one midfielder, Everton's Marouane Fellaini, in the summer transfer window but has said he remains eager to strengthen in the centre of the pitch.
He had an offer to sign Athletic Bilbao's Ander Herrera rebuffed in the summer and has been linked again with the Spaniard as well as Roma's Bosnia international Miralem Pjanic. Meanwhile, Khedira has also been linked with Chelsea.