With Sebastian Vettel and the Scuderia failing to come to terms on extending the four-time world champion's contract beyond this year, Ricciardo was considered one of the frontrunners for the seat alongside Charles Leclerc.
Ricciardo only joined Renault for the start of last season after five seasons with Red Bull.
"There could be many drivers [that could replace Ricciardo], as there are great drivers available for next year", Abiteboul told in an interview with RMC radio.
Commenting on the prospect of Alonso, who left the grid at the end of 2018, returning to F1 next year, former Ferrari team boss Stefano Domenicali believes it would only boost the already impressive list of talent on the grid.
Renault says it plans to stay in Formula One despite the French vehicle manufacturer undergoing a major restructuring process that will see 15,000 layoffs worldwide.
Asked why the talks had not gone further, Ricciardo added: "I don't know actually and I've never really chosen to dive too deep into it".
Renault is in need of a star driver to do its bit commercially to help shift cars and provide a favourable image, while Alonso - on the assumption he wants a return to F1 - would see the welcome mat laid down for him at a team he'll always be associated with. So I don't really look at it like, 'Why not me?' I just look at it: Yeah, Carlos had a very strong 2019.
"The only thing I can say is that we'll take our time to think about this".
Alonso's former Ferrari boss Stefano Domenicali also gave his backing to Alonso lining up alongside Esteban Ocon for Renault next season, insisting the sport would be the real victor.
Ricciardo said: "I guess no decision is ever black and white".
"Obviously it's not an overnight decision".