Manchester United and AC Milan are two clubs that have expressed interest in Estupinan's services, and Brighton have informed their agents that they are prepared to accept an offer of £40 million for the left-back.

Both United and Milan are in the market for a new left-back, and Estupinan's skills and experience make him an attractive option for these clubs.

Interestingly, Estupinan himself has indicated a preference to remain in England if he leaves Brighton this summer.