Dusan Vlahovic "should have done more" at Juventus, according to former Fiorentina team-mate Borja Valero.
The Serbia striker joined the Bianconeri for €70million in January, having scored 41 goals in 64 appearances for La Viola since the start of the 2020-21 season.
But the 22-year-old has subsequently struggled to kick on, despite finishing as the second-highest scorer in Serie A last term with 24 goals - a tally only bettered by Lazio's Ciro Immobile (27).
Vlahovic has only netted 16 times in 36 games for Juve with a groin injury hampering his progress this season, while also limiting his participation for Serbia at the World Cup in Qatar.
Valero played alongside Vlahovic at Fiorentina during the 2020-21 campaign, and the ex-midfielder is disappointed with his former team-mate's spell in Turin.
"The Bianconeri fans had very high expectations of Vlahovic, especially for everything he had done in Florence," he told DAZN.
"Considering the amount that Juve paid to get him, it's true to say that I expected more from him. He should have done more."