Delph left Villa to join Manchester City in the summer transfer window, in a deal which caused uproar around Villa Park.
However, Nicholas does not believe that the Claret and Blues are missing Delph’s quality – as they have added class in other areas.
“People talk about missing Delph, but they’re not really missing him,” he said. “They might be missing his aggression, but they are not missing his quality, because they can find that in other positions.”
Delph’s transfer to City was hugely controversial, as the England international made a statement to the club's official website announcing his intention to stay with Villa, only to complete a move to the Etihad Stadium a few days later.
Delph has not made too much of an impact at City so far, due to injury, but he will be hoping that the move works out in the future.
Villa, meanwhile, will be looking to prove that they can cope without Delph – but they have not made a good start to their season.
The Claret and Blues have not won a match since the opening day of the season, and they appear to be in genuine danger of being relegated.