The Spain international is believed to be unsettled at the Bernabeu after Real allowed his contract to enter its final two years.
Manchester United are reportedly keen to take advantage of the 30-year-old's situation as Louis van Gaal continues his search for a world class centre-half.
However, according to Spanish publication AS, Real won't let Ramos leave for anything below their valuation of £64m.
The Red Devils, who have a reported £150m transfer budget, are understood to have already had a £35m bid turned down for the former Sevilla man.
GETTY
Real Madrid slap £64m price tag on Sergio Ramos
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