El Confidencial says Real coach Carlo Ancelotti has given his green light for Khedira to be put up for sale.
This has immediately attracted an offer of £20 million from United for the Germany international.
However, Real won't jump into a quick sale, aware that Arsenal have also expressed interest.
Ancelotti is happy to sell Khedira as he wants Sporting Lisbon midfielder William Carvalho to be signed as his direct replacement.
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