Rojo is yet to feature under Ole Gunnar Solskjaer this season, with the defender missing out on the Norwegian's opening three matchday squads. He was, however, included in Manchester United squad for the 2019/2020 UEFA Europa League season.
That will be frustrating for him [Lampard] I think, because he knows he's got quality in his team but he's missing something," Scholes told Premier League's official website. "He's definitely missing something.
Having started just 10 games all season, the disappointment of missing out on the biggest game in club football prompted Saha to bring his United career to an end.
The 25-year-old has come under fire on several occasions this season for missing easy chances, the most recent of which came in Chelsea's Champions League semi-final first-leg 1-1 draw with Real Madrid last Tuesday.
Solskjaer is fighting to save his job, after a miserable start to the season, which has seen United pick up just nine points from their opening eight Premier League games.
So far this season, the young goalie has started in all but one of Parma's Serie A matches this season, missing the defeat to Udinese through suspension.
The forward has only won one trophy - the 2023 Arab Club Championship, with Al-Nassr, missing out on two title tilts to Al-Ittihad and Al-Hilal respectively.
This will mark the 194th meeting between the two rivals, with Premier League champions Manchester City facing the 2023/24 FA Cup winners Manchester United in this traditional season opener.
The Premier League holders are also sorely missing Ballon d'Or winner Rodri, who has been ruled out for the rest of this season with a serious knee injury.