With Romain Grosjean off to Haas and Lotus "engaged to be married" to Renault, Federico Gastaldi believes there are several "tasty" options to replace the Frenchman.
Earlier this week Haas announced that Grosjean would lead their charge in their debut campaign in 2016 leaving Lotus a driver short.
Several drivers have already been linked to the Frenchman's vacant seat with test driver Jolyon Palmer up against Kevin Magnussen, Jean-Eric Vergne and Esteban Ocon.
For now, though, the team is keeping quiet as to who is on their short list.
"We know that we can now publically say bonne chance to Romain who is headed to pastures new next year. He's been a real asset to us over the years so we'll certainly miss him," deputy team principal Gastaldi said.
"We know we have Pastor confirmed for one seat and we know that there are quite a few tasty drivers available out there and we're doing everything to ensure that we've got a desirable race seat, which needs to be filled.
"What happens next is that there'll be a number of discussions in a number of places then at some point we'll have an announcement to make."
He added: "I can at this stage publically confirm that it won't be me driving."
Gastaldi also weighed in on Lotus' budding partnership with Renault which saw the latter sign a letter of intent in the wake of the Japanese GP.
He said: "It looks like we're engaged to be married again, which is interesting as we've had a few relationships together before!
"It's positive for the sport and it's positive for Enstone that a company with the history and prestige of Renault is looking to strengthen its role in Formula 1.
"It's true we've both experienced a few knocks over the years but we've also had some exceptional highs and that makes us all collectively exceptionally motivated to harness our resilience and show everyone what we can do."