The Daily Mail is reporting Watford will officially announce the signing of the former West Ham striker on Tuesday after he passing a medical and agreed personal terms in the last 24 hours.
Watford manager Quique Flores said the imminent signing of the 32-year-old former Italian international would give his side a major boost.
"He is the type of player we need, as he can unlock defences," Flores said.
Guangzhou forward Diamanti set for Watford loan
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