Hamburg manager Thorsten Fink admits the club may have to sell Son Heung-min this summer.

The 20-year old South Korean striker is attracting the interest of the likes of Arsenal and Tottenham with Fink stating he will be sold if he does not agree a new deal before the summer.

"If Heung-min Son is not signing a new contract and makes up his mind to definitely leave, and given a concrete offer from an interested club, then we would be forced to sell," he told Sport-BILD.

"In a situation like this we would be unable to do anything else as we would be unable to keep hold of him."

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