"Russia has repeatedly expressed readiness to render assistance to the Republic of Turkey [in developing a fifth-generation fighter aircraft], and now we are negotiating this project," Shugayev said at the Dubai Airshow exhibition.
In October, Ankara said that the US offered Turkey to purchase F-16 jets after it was excluded from the F-35 supply program.
In April, the United States reportedly sent an official notification to Turkey about its exclusion from the production program of the latest F-35 fighter jets due to Ankara's purchase of the Russian S-400 air defence system.
Meanwhile, Alexander Mikheev, the director general of Russian state arms exporter Rosoboronexport, has said that Russia and Turkey have yet to sign the contract for supplies of the second division of S-400 Triumf surface-to-air missile systems, but defense industry cooperation with Ankara is developing. He noted that Rosoboronexport implemented the first contract for supplies of the S-400s without any complaints from Turkey.