The Uruguay international, who represented his country at the World Cup, has had to be patient since joining the Reds from Penarol in 2020.
Following two loan spells with Alaves, the winger has had a couple of injury problems and been an unused substitute but grasped the opportunity to impress in the closing stages of the 3-0 win over Charlton Athletic that took Ten Hag's side through to the last four of the Carabao Cup.
Pellistri not only sparkled going forward, down the right, but made one vital contribution in defence as well with some calm work at the back.