Malaysian low-fare airline group Air Asia could soon add to its firm order for 200 Airbus A320NEOs.

CEO Tony Fernandes says negotiations are continuing with Airbus but declined to specify how many aircraft he would like to order. “That depends on the discount Airbus is offering to us,” he said May 24 at an Airbus event in Toulouse.

Air Asia took delivery of its 100th A320 on Thursday. The airline has ordered 75 more, plus the 200 NEOs.

Airbus Chief Operating Officer for Customers John Leahy says an order could be announced by the Farnborough air show, July 9-15.

Air Asia plans to return to long-haul flying once it takes delivery of its fleet of A350s. The airline has placed a firm order for 10 A350-900s, the first of which was due for delivery in 2016 before Airbus announced a delay of up to six months for the program.

The airline recently discontinued its A340-based operations to Europe, saying they were uneconomical.