Shakhtar Donetsk chief Sergei Palkin says AS Roma must up their offer if they're to sign Luiz Adriano.
Roma have made an attempt to take Adriano on initial loan.
"We're still dealing with the Giallorossi for Luiz Adriano", Palkin has told Footballua.tv.
"But for the moment the offer is inadequate. We'll see what's going to happen over the next few days."
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