Pellistri made his long-awaited debut in the Reds 3-0 victory over Charlton Athletic in the Carabao Cup last week, two-and-a-half years on from signing back in October 2020.
The 21-year-old former Penarol winger was only on the pitch for a short time, but provided valuable contributions both in defence and attack, even recording an assist for Marcus Rashford late on.
The winger, who played three times for his country at the recent World Cup in Qatar, has been linked with a temporary move away during the January transfer window, following previous loan spells at Deportivo Alaves in Spain.