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Chelsea offered £43m for Napoli right-back Elseid Hysaj in the summer of 2018 but could get the Albanian international for free next summer.
Hysaj looks set to leave Napoli as a free agent next summer when his contract expires at the end of the season.
Hysaj’s agent, Mario Giuffredi, revealed Chelsea’s offer for the right-back.
“Whatever happens with him, the outcome will be great,” Hysaj’s agent told Radio Punto Nuovo.
“If we leave, we’ll do what we had to do in the summer. If we don’t leave, Napoli will lose the player on a free transfer, but it’ll always work out for us.
“A year-and-a-half ago, Napoli could’ve taken €50m from Chelsea. If Hysaj stays at Napoli (after January), the Neapolitan club risks losing the player for nothing (in the summer).”