Holloway took over at Palace in November 2012, and his philosophy was vastly different from that of his predecessor, Dougie Freedman.
The Eagles were generally organised and compact under Freedman, but Holloway wanted them to be more expansive in their play.
By adopting this approach, Holloway did manage to get Palace into the Premier League, but they struggled when in the top-flight and he was disposed of in October 2013, with Tony Pulis eventually guiding the side to safety.
"You can’t turn water into wine - it wasn’t rocket science," Delaney said. "Ian Holloway, much as I love him, wanted to go a different route and for it to happen overnight. What we are now is what he wanted. He went a little too quick. The only way we could play was as a difficult, horrible, pacey counterattacking team.
"We didn’t get it, weren’t good enough. Maybe he couldn’t get his point across or we couldn’t take it on board."
Pulis did an amazing job guiding the Eagles away from the bottom three after their poor start under Holloway, but the club have advanced even further under the guidance of Alan Pardew.
The former Newcastle United boss has made the Selhurst Park side one of the most threatening sides in England, and helped them to finish 10th in the Premier League last season.
Palace are not content with simply staying there, though, and have shown great ambition over the summer by bringing in players such as Yohan Cabaye and Connor Wickham.