In this Nov 23, 2019 photo, Flamengo's Diego (right) and River Plate's Lucas Martinez Quarta (left) vie for the ball during their Copa Libertadores final football match at the Monumental stadium in Lima. (LUKA GONZALES / AFP)

BUENOS AIRES - Real Madrid and Manchester City are among a host of European clubs reportedly interested in signing River Plate and Argentina international defender Lucas Martinez.

Lucas Martinez is tied to River Plate until June 2021 and has a 10 million-euro buyout clause written into his contract

Others considering bids to secure the 23-year-old in the next transfer window are said to include Valencia, Internazionale, Milan, Ajax and Borussia Dortmund.

"Before the coronavirus pandemic hit, there were many clubs that inquired about him," his manager Gustavo Goni told the Ole sports news service.

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"I think they're going to be interested again when the picture becomes clearer. It's just a matter of waiting."

Martinez is tied to River Plate until June 2021 and has a 10 million-euro buyout clause written into his contract.

He has earned two Argentina caps, having made his international debut in a 0-0 draw with Chile in Los Angeles.