The Italian striker’s season-long loan deal at the London Stadium was cancelled early in January after he had failed to find the net in 11 games, with the terms of West Ham’s loan deal with Juventus obligating them to sign Zaza for £20m if he played three more games.
In Spain Zaza, who first shot to prominence at Sassuolo in 2014, has enjoyed significantly improved form, providing four goals in 14 La Liga appearances and aiding Valencia in their rise from 17th in the table to 12th.
Zaza, who scored twice in a 3-1 win at Granada yesterday, insisted that he should bear the responsibility for his struggles in the Premier League on joining the Hammers, admitting that he had been “very negative” in his attitude at his new club.
“There was an atmosphere, a culture very different to mine. That was a problem.”